The IV bag will contain 0.036 moles of carbon atoms. We can start by calculating the number of moles of C₆H₁₂O₆ in 100 ml of the diluted solution.
Calculate the moles of C₆H₁₂O₆ in 1 L of the original solution (0.30 M):
moles = concentration x volume = 0.30 M x 1.0 L = 0.30 moles
Calculate the volume of the diluted solution:
volume = original volume + added volume = 1.0 L + 4.0 L = 5.0 L
Calculate the concentration of C₆H₁₂O₆ in the diluted solution:
concentration = moles of solute / volume of solution = 0.30 moles / 5.0 L = 0.06 M
Calculate the moles of C₆H₁₂O₆ in 100 ml of the diluted solution:
moles = concentration x volume = 0.06 M x (100 ml / 1000 ml/L) = 0.006 moles
Calculate the number of moles of carbon atoms in 0.006 moles of C₆H₁₂O₆:
Each molecule of C₆H₁₂O₆ contains 6 carbon atoms, so the number of moles of carbon atoms in 0.006 moles of C₆H₁₂O₆ is:
moles of carbon atoms = 0.006 moles x 6 atoms of carbon / 1 molecule of C₆H₁₂O₆ = 0.036 moles of carbon atoms
Therefore, the IV bag will contain 0.036 moles of carbon atoms.
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Complete question:
To prepare a nutrient solution, a nurse dilutes 1.0L of 0.30 M C6H12O6(aq) by adding 4.0L of water. The nurse then adds 100. ml of the diluted solution to an intravenous bag. How many moles of carbon atoms will the IV bag contain?
what is the total pressure exerted by a mixture containing two gases if the partial pressure of one gas is 70 torr and the partial pressure of the other gas is 30 torr?
The total pressure exerted by a mixture containing two gases if the partial pressure of one gas is 70 torr and the partial pressure of the other gas is 30 torr is 100 torr.
The overall pressure is what?The sum of the partial pressures equals the total pressure.Total pressure therefore equals 70 plus 30 to equal 100 torr.As a result, a mixture of two gases exerts a total pressure of 100 torr.
How can you determine the pressure that a combination exerts?The answer to the above question is F=mg, where F seems to be the gravity gradient, m is the body's mass, and g seems to be the acceleration brought on by gravity.We are aware that P=FA, where P is a body's pressure, F is a force on the body, and A seems to be the force's area of action
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the beta decay of cesium-137 has a half-life of 30.0 years. how many years must pass to reduce a 25 mg sample of cesium 137 to 8.7 mg?
Approximately 43.8 years must pass to reduce a 25 mg sample of cesium-137 to 8.7 mg.
The half-life of cesium-137 is 30.0 years, which means that after 30 years, half of the original amount of cesium-137 will have decayed into a different element.
Let's call the original amount of cesium-137 N. After one half-life, the amount remaining will be N/2. After two half-lives, the amount remaining will be N/2^2 = N/4. And so on.
In this case, we want to know how many half-lives must pass to reduce a 25 mg sample of cesium-137 to 8.7 mg. To find out, we can divide the final amount by the initial amount and take the logarithm base 2:
log2(8.7 mg / 25 mg) = x
x = log2(0.348) = -1.46
So, x half-lives have passed, where x is a negative number. To convert x to years, we multiply by the half-life:
-1.46 * 30 years/half-life = -43.8 years
this is an estimate based on the half-life, and the actual amount of cesium-137 remaining after a given amount of time may be slightly different.
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if the inside surface of a glass tube were coated with wax, which is a nonpolar hydrocarbon, how would the general shape of the water meniscus change?
If wax, a nonpolar hydrocarbon, were to be applied to the inside surface of a glass tube, the result would be a change in the shape of the mercury meniscus.
What determines the meniscus's shape?
A meniscus may rise or fall. It all relies on whether the liquid's molecules are more drawn to one another or to an outside substance. When the molecules of the liquid are drawn to the molecules of the container, a concave meniscus forms, which is what you generally witness. A glass tube and water cause this to happen.
What is a meniscus in a C shape?
The medial menisci are a wedge-shaped fibrocartilagenous structure in the middle of the tibia and femur. Because the medial meniscus is free of the plateau anteriorly and posteriorly, it has a somewhat more C shape compared to the lateral menisci.
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g consider an enzyme-catalyzed reaction whose initial rate is equal to vmax. what change to the reaction would result in a higher reaction rate?
Vmax is about 700. In a plot of V vs. [S], the asymptote is Vmax. Simple inspection of the data shows the approach to Vmax—the rate increases by only 1 unit when [S] increases five-fold.
Does greater Vmax equate to less km?The relationship between KM and the enzyme's affinity for its substrate is inverse.Low enzyme substrate affinity is correlated with high levels of KM.An enzyme with a low KM value has a strong substrate affinity.
Does more Vmax equate to greater km?The relationship between Km and the enzyme's affinity for its substrate is inverse.Low enzyme substrate affinity is correlated with high Km values.An enzyme with a low Km value has a high substrate affinity.
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what important thing that you should always do when you come into lab should you not do before this lab?
When entering a lab, you should always wash your hands and remove any jewelry or loose clothing items to avoid contamination.
You should also make sure to avoid touching your face, eyes, and mouth while in the lab, as this can also increase the risk of contamination.
Additionally, you should also refrain from eating, drinking, or smoking in the lab as this can introduce contaminants into the work area.
When using any chemicals or equipment, make sure to read the instructions and warnings carefully to avoid any potential risks or accidents. Lastly, make sure to clean up any spills or messes immediately to avoid any contamination or hazards.
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Please help me i really need help hurry quick
Evaporation removes a larger amount of salt then freezing does.
Does evaporation remove saltiness from a water body?Evaporation can remove saltiness from a water body. When water evaporates, the water molecules with a lower concentration of salt are more likely to escape into the atmosphere, leaving behind the water molecules with a higher concentration of salt. Over time, this process can result in a higher concentration of salt in the remaining water, making it saltier.
This is the basic principle behind the process of solar evaporation, which is used to obtain salt from saltwater. The saltwater is placed in large, shallow ponds and allowed to evaporate, leaving behind the salt crystals that are then harvested.
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multiple choice question in a bronsted-lowry acid-base reaction, equilibrium will favor the if the reacting acid and base are strong. the reaction will always favor the formation of the acid and base. multiple choice question. reactants; weaker reactants; stronger products; weaker products; stronger
The equilibrium of a Bronsted-Lowry acid-base reaction will favor the formation of the stronger acid and base if both the reacting acid and base are strong.
The correct answer is E) Stronger.This means that the ratio of the concentrations of the products to reactants will be higher, and the reaction will be shifted toward the side containing the stronger acid and base.
The Bronsted-Lowry definition of acids and bases is one of the most commonly used in chemistry. According to this definition, an acid is a substance that can donate a proton (H+) to another substance, while a base is a substance that can accept a proton. The reaction between an acid and a base is called a neutralization reaction and results in the formation of a salt and water.
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In a Bronsted-Lowry acid-base reaction [1], equilibrium will favor the formation of the stronger acid and base if the reacting acid and base are both strong. Multiple Choice:
A) Reactants
B) Weaker Reactants
C) Stronger Products
D) Weaker Products
E) Stronger
true or false. a homogeneous catalyst can be in a different phase as the rest of the reaction as long as it is evenly distributed throughout the reaction mixture. true or false. a homogeneous catalyst can be in a different phase as the rest of the reaction as long as it is evenly distributed throughout the reaction mixture. true false
True , A catalyst is a substance that quickens a chemical reaction; therefore, in homogeneous catalysis, the catalyst and reactants are in the same phase. Most of the time, everything will exist as a gas or be contained within a single liquid phase.
Are there distinct phases for reactants and homogenous catalysts?The difference between heterogeneous and homogeneous catalysts is that the former are in the same phase as the latter are not.
Is there a single phase in a homogenous system?A single phase is what is meant by the notion of a pure substance or homogenous mixture. There are two or more phases in a heterogeneous mixture. Water and oil do not mix uniformly when combined; instead, two distinct layers are created.
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which of the following is/are true? select all that apply. bonds within a molecule are broken when it goes from the solid to the liquid phase. attractive forces between molecules are broken when it goes from the solid to the liquid phase
The second statement "attractive forces between molecules are broken when it goes from the solid to the liquid phase" is true.
The process of a solid going to the liquid phase is known as melting or fusion. When a solid is heated, the thermal energy causes the particles in the solid to gain kinetic energy, and they start to vibrate more vigorously. At a certain temperature, the vibrations become so intense that the particles can overcome the attractive forces holding them in place, and they start to move freely, forming a liquid.
In this process, the bonds within a molecule remain intact. However, the attractive forces between molecules are broken as the particles start to move more freely and are no longer held in a fixed arrangement as in a solid. This increased mobility allows the molecules to flow more easily and take the shape of the container they are in, which is one of the defining characteristics of a liquid.
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The complete question is:
Which of the following is/are true? Select all that apply.
bonds within a molecule are broken when it goes from the solid to the liquid phase. attractive forces between molecules are broken when it goes from the solid to the liquid phaseyou compile a model to test how dissolved carbon dioxide levels are affecting calcium deposition in the pacific ocean as a result of climate change. your model indicates that many species relying on carbonate for shell deposition will not be able to survive due to the projected future changes in dissolved carbon dioxide levels as a result of climate change. what is the likely conclusion to draw from this result?
Your model is a prediction and should be applied cautiously to help land managers and other researchers.
What are the roles of a land manager?A land manager oversees the use, preservation, and development of ranges of land. As a land manager, your duties include ensuring land use is compliant with regulations, making suggestions for sustainable use, and researching the impact of development. The study of land management is called Sustainable land management and it refers to practices and technologies that aim to integrate the management of land, water, and other environmental resources to meet human needs.
While ensuring long-term sustainability, ecosystem services, biodiversity, and livelihoods.
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why did you preheat the stemless funnel and filter paper with boiling water prior to filtering the impure acetanilide solution?
Preheat both the stemless funnel and the filter paper with boiling water due to the fact crystallization can go through at the funnel which then can clog the lowest and block the drift of filtrate all through filtration.
Acetanilide also can be prepared with the aid of acetylating aniline with acetic anhydride inside the presence of focused hydrochloric acid. Dissolve aniline in hydrochloric acid and add acetic anhydride, then stir properly. Pour the aggregate of sodium acetate into water.
Acetanilide, an artificial organic compound added to therapy in 1886 as a fever-reducing drug. Its effectiveness in relieving aches turned into determined soon thereafter, and it became used as an alternative to aspirin for decades in treating such commonplace complaints as headaches, menstrual cramps, and rheumatism. Acetanilide is a weak base because of the resonance systems it suggests. The compound is a beginning fabric for plenty of pharmaceutical capsules like sulfanilamide, a topical antibacterial, antifungal medicine.
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how many total moles of ions are released when of dissolves completely in water? round your answer to significant figures.
when one mole of a substance is dissolved in water, 2 moles of ions are produced and the answer is 2 moles.
When one mole of a substance dissolves completely in water, it releases two moles of ions. This is known as the law of conservation of mass. Therefore, According to the law of conservation of mass, when a substance is dissolved in water, the total number of moles of ions produced will always equal the number of moles of the original substance. This is because the number of atoms in the final solution must be the same as the number of atoms in the original substance. Therefore, when one mole of a substance dissolves in water, two moles of ions are produced. This is because each mole of the original substance consists of two moles of atoms, and once it dissolves, each mole of atoms will become two moles of ions. Thus, when one mole of a substance is dissolved in water the number of moles of ions released is two.
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is the dissolution reaction of urea enthalpically favored?
No, since the biochemical system gains energy, it does not have enthalpy favored.
Is the breakdown of urea driven by entropy or by enthalpy?Urea dissolves quickly in liquid, making it a good choice for enthalpy change measurements during dissolution. Entropy is the process' driving force since it is endothermic and spontaneous.
How do you determine whether a reaction was enthalpically advantageous?If stronger bonds are created than are broken, if a stronger acid or base is generated in the result, or if more molecules are produced, processes will be thermodynamically beneficial. Other examples include when more molecules are produced.
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What is the largest beverage size at starbucks?
Answer: trenta (31 ounces).
Explanation:
a 20.0 ml solution of naoh is neutralized with 30.5 ml of 0.200 m hbr. what is the concentration of the original naoh solution?
The concentration of the original sodium hydroxide solution was 0.0305M.
Neutralization Reaction-
A neutralization reaction is a chemical reaction between an acid and a base that results in the formation of a salt and water. In a neutralization reaction, the hydrogen ions (H+) from the acid react with the hydroxide ions (OH-) from the base to form water:
Acid + Base → Salt + Water
Calculation-
We can use the concept of stoichiometry to determine the concentration of the original sodium hydroxide (NaOH) solution.
First, we'll write the balanced chemical equation for the reaction between sodium hydroxide and hydrogen bromide:
NaOH + HBr → NaBr + H2O
Next, we'll convert the volume of hydrogen bromide to moles using the concentration and Avogadro's law:
30.5 mL * (0.200 mol/L) / 1000 mL/L = 0.00610 mol
Next, we'll use the mole ratio from the balanced chemical equation to determine the number of moles of sodium hydroxide that reacted:
0.00610 mol HBr / 1 mol NaOH = 0.00610 mol NaOH
Finally, we'll convert the number of moles of sodium hydroxide to concentration, using the volume of the original solution:
0.00610 mol / 20.0 mL * (1000 mL/L) / 1000 mL = 0.0305 M
So, the concentration of the original sodium hydroxide solution was 0.0305 M.
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Which toxic substance is often used to extract gold and results in harmful environmental effects? a. acid mine drainage b. carbon dioxide c. sulfur dioxide d. cyanide e. fluoride
When used to extract gold, the hazardous chemical cyanide causes damage to the environment.
Where can you find cyanide?Low concentrations of cyanides can be discovered in the environment and in goods that we frequently use and consume. Certain bacteria, fungus, and algae can generate cyanides. Additionally, cyanides can be found in things like tapioca, spinach, wood shoots, pistachios, lima beans, fruit shells, and car exhaust.
Cyanide can people eat it?The quantity of cyanide someone individual is subjected to, the exposure, and the duration of exposure all affect how severely they are poisoned by it. The greatest harmful effects of cyanide come from inhaling the gas, however cyanide can also be hazardous when ingested.
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what would you expect a 'hnmr spectrum to look like for ch3ch,scha? be sure to include a drawing of a spectrum. approximate chemical shift positions (number of the ppm) splitting patterns and hydrogen integration.
The splitting pattern multiplicity of the peaks would be determined by the number of neighboring hydrogen atoms that are chemically different from the hydrogen.
The 1H NMR Hydrogen spectrum of CH3CH2SH would show four peaks corresponding to the four distinct types of hydrogens present in the molecule: methyl (CH3), methylene (CH2), and the two hydrogen atoms on the sulfur. The chemical shift of the methyl protons would be around 0.9-1.2 ppm and the chemical shift of the methylene protons would be around 2.0-2.2 ppm. The chemical shift of the hydrogen atoms on the sulfur would be around 2.7-3.0 ppm.
For example, the methyl protons would show a singlet (one peak) because each methyl hydrogen has only one neighboring hydrogen that is chemically distinct. The methylene protons would show a doublet (two peaks) because each methylene hydrogen has two neighboring hydrogens that are chemically distinct. The hydrogen atoms on the sulfur would show a triplet (three peaks) because each hydrogen on the sulfur has three neighboring hydrogens that are chemically distinct.
The hydrogen integration values would correspond to the number of hydrogen atoms that give rise to each peak in the spectrum. For example, the integration value of the singlet peak corresponding to the methyl protons would be 3, because there are three methyl hydrogens in the molecule. The integration value of the doublet peak corresponding to the methylene protons would be 2, because there are two methylene hydrogens in the molecule. The integration value of the triplet peak corresponding to the hydrogen atoms on the sulfur would be 2, because there are two hydrogen atoms on the sulfur.
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determine the vapor pressure in torr of the solution when 33.20 g of a non-volatile, non-electrolyte substance x with molar mass of 210 g is dissolved at in 100 g of methanol at 298k. please note that methanol has a molar mass of 32.04 g/mol and vapor pressure of 122.7 torr at 298k.
The vapor pressure of the solution will be lower than that of pure the vapor pressure of the solution is 118 torr.
Calculation:
Using Raoult's law, the vapor pressure of the solution (P) is given by:
P = X_A * P°_A + X_B * P°_B
where X_A and X_B are the mole fractions of methanol (A) and the non-volatile solute (B) respectively, and P°_A and P°_B are the vapor pressures of methanol and the solute at the same temperature.
To find X_A and X_B:
Moles of methanol = 100 g / 32.04 g/mol = 3.125 mol
Moles of solute = 33.20 g / 210 g/mol = 0.158 mol
Total moles = 3.125 + 0.158 = 3.283 mol
X_A = 3.125 mol / 3.283 mol = 0.95
X_B = 0.158 mol / 3.283 mol = 0.05
Substituting in the values,
P = 0.95 * 122.7 torr + 0.05 * 0 torr (since the solute is non-volatile) = 118.0 torr
Hence the vapor pressure of the solution is 118 torr.
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explain what is happening on the molecular scale when a chemical reaction occurs. explain how a balanced equation shows what is happening in a reaction
Chemical reactions contain breaking chemical bonds among reactant molecules (debris) and forming new bonds between atoms in product particles (molecules).
A balanced chemical equation occurs whilst the range of the atoms involved in the reactants facet is equal to the number of atoms in the goods aspect.
A chemical response is a manner that leads to the chemical transformation of 1 set of chemical substances to any other. Classically, chemical reactions embody modifications that handiest involve the positions of electrons inside the forming and breaking of chemical bonds among atoms, without exchange to the nuclei (no change to the factors gift), and may regularly be described with the aid of a chemical equation. Nuclear chemistry is a sub-area of chemistry that involves the chemical reactions of risky and radioactive elements where both electronic and nuclear modifications can arise.
The substance (or materials) initially worried in a chemical reaction are called reactants or reagents. Chemical reactions are commonly characterized by using a chemical trade, and they yield one or greater merchandise, which usually have residences exclusive from the reactants. Reactions often encompass a sequence of man or woman sub-steps, so-referred to as fundamental reactions, and the statistics on the correct path of movement are part of the response mechanism.
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moles of an ideal gas at temperature T1 and volume V1 expand isothermally until the volume has doubled, In terms of n T1, and V1, what are (a) the final temperature, (b) the work done on the gas, and (c) the heat energy transferred to the gas?
For an ideal gas, the pressure and volume are related by the equation PV = nRT, where n is the number of moles, R is the universal gas constant, and T is the temperature in Kelvin.
Under various circumstances, how is ideal gas heated from temperature T1 to T2?By maintaining a constant volume, an ideal gas can be heated from temperature T1 to temperature T2. The rule PVn = constant states that the gas expands back to its initial temperature.
Calculation-
a) In an isothermal process, the gas's end temperature stays constant. Thus, T2 = T1 is the final temperature.
b) The formula W = - nRT ln(V2/V1), where R is the universal gas constant, can be used to compute the work done on the gas. With the above values substituted, we obtain W = -nRT1 ln (2).
c) The gas's heat energy transfer can be estimated using the formula Q = W. Thus, Q = -nRT1.
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your pharmacy stocks 60% lansoprazole suspension and a prescription is written for 360ml of 40% lansoprazole suspension. how many ml of solvent is necessary to carry out the dilution?
The amount of solvent required to carry out the dilution will be 120 mL.
The concentration of the initial solution is 60% lansoprazole suspension, and the desired concentration is 40% lansoprazole suspension. To calculate the volume of solvent required to carry out the dilution, we can use the following formula:
C₁V₁ = C₂V₂
Where C₁ is the concentration of the initial solution, V₁ is the volume of the initial solution, C₂ is the desired concentration, and V₂ is the volume of the final solution.
Since the volume of the final solution is known (360 mL), we can rearrange the equation to solve for V1:
V1 = (C₂V₂) / C₁
V1 = (40% × 360 mL) / 60%
V1 = 240 mL
So the initial volume of the 60% lansoprazole suspension is 240 mL. To this volume, 360 mL - 240 mL = 120 mL of solvent is required to carry out the dilution to 40%. Therefore, the amount of solvent required is 120 mL.
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Indicate whether the statements describe a saturated fatty acid or an unsaturated fatty acid.
• Solid at room temperature
• Liquid at room temperature
• Found primarily in plants and plant products
• Oil
• Comes primarily from animals and animal products
• No double bonds within carbon backbone
• Trans fats are a synthetic form that has a higher melting point
• Double bonds within carbon backbone
Options 1, 5, 6, 7, and 8 are saturated fatty acids, options 2, 3, and 4 are unsaturated fatty acids. Depending on the type of oil used, Option 4 is both saturated and unsaturated fatty acids.
What makes saturated fatty acids apart from unsaturated ones?The presence of the double bonds with in fatty acid chain is what distinguishes saturated fat from unsaturated fat. Unsaturated fats have at least one double bond with in fatty acid chain while saturated fats have no double bond between the individual carbon atoms.
• Solid at the room temperature - Saturated fatty acid
• Liquid at room temperature - Unsaturated fatty acid
• Found primarily in plants and plant products - Unsaturated fatty acid
• Oil - Can be either saturated or unsaturated, depends on the specific type of oil
• Comes primarily from animals and animal products - Saturated fatty acid
• No double bonds within carbon backbone - Saturated fatty acid
• Trans fats are a synthetic form that has a higher melting point - Saturated fatty acid
• Double bonds within carbon backbone - Unsaturated fatty acid
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If we increase the temperature of the vessel to 450 K at constant volume, what would the pressure inside the vessel be? a. 10 atm
b. 5 atm
c. 20 atm
d. 15 atm
The pressure inside the vessel would be 15 atm if we increased the temperature of the vessel to 450 K at constant volume. As a result, Option D is right.
According to the Ideal Gas Law, the pressure inside the vessel is directly proportional to the temperature (Kelvin) and the number of moles of gas present in the vessel, if the volume is kept constant. In other words, if we increase the temperature of the gas, the pressure inside the vessel will also increase.
The Ideal Gas Law equation is:
PV = nRTWhere:
P is the pressureV is the volumen is the number of molesR is the ideal gas constant (8.31 J/mol*K)T is the temperature in KelvinGiven that V is constant, we can rearrange the equation to solve for P:
P = (nRT)/V.Assuming that n and V are constants, then P is directly proportional to T. So, if the temperature increases by a factor of T2/T1, the pressure will increase by the same factor.
Let's say the initial pressure was 10 atm, and the initial temperature was 400 K. Then P1/T1 = 10 atm/400 K.
When the temperature is increased to 450 K, the pressure will become:
P2 = (P1 * T2)/T1 P2 = (10 atm * 450 K) / 400 K P2 = 15 atmSo, when the temperature of the vessel is increased to 450 K at constant volume, the pressure inside the vessel will increase, and the answer is "d. 15 atm".
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CuCh2 + 2KNO3 - Cu(NO3)2 + 2KCI
a. If 45 grams of copper (II) chloride is reacted with excess potassium nitrate what mass of copper (II) nitrate can be formed?
b. If 58 grams of copper (II) nitrate is formed when this experiment is performed in the laboratory what is the percent yield for this reaction?
The mass of copper (II) nitrate that can be formed is 62.7 grams.
If 58 grams of copper (II) nitrate is formed when this experiment is performed in the laboratory, the percent yield for this reaction is 92.5 %.
What mass of copper (II) nitrate is formed?The mass of copper (II) nitrate that is formed is determined from the mole ratio of the reaction as obtained from the equation of the reaction.
The mole ratio of copper (ii) chloride and copper (ii) nitrate is 1 : 1
The mole of copper (ii) chloride reacted = 45/134.5 moles
The mass of copper (II) nitrate that is formed = 45/134.5 * 187.5 g
The mass of copper (II) nitrate that is formed = 62.7 grams
Percent yield = 58/62.7 * 100%
Percent yield = 92.5 %
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proteins with more than one polypeptide chain are said to have a ______ structure.
When a protein molecule is generated as a complex of many polypeptide chains, the entire structure is referred to as the quaternary structure. The overall three-dimensional organization of a polypeptide chain.
What does a polypeptide chain look like?A polypeptide chain's structure is a linear arrangement of amino acids. Peptide bonds hold each amino acid to the one before it. In cells, there are 20 different kinds of amino acids. The core carbon of each amino acid is joined to an amino group, a carboxyl group, and a variable called the R group.
What protein possesses a tertiary structure?Proteins are frequently classified as globular or fibrous forms based on their tertiary structure. Fibrous proteins feature long, rope-like structures that are robust and hydrophobic, like -keratin. Immunoglobulins and plasma proteins are more hydrophilic and spherical than globular proteins.
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what is the effect on the volume of one mol of an ideal gas if the pressure changes from 760 torr to 190 torr and the temperature changes from 310 k to 155 k?
If the pressure changes from 760 torr to 190 torr and the temperature changes from 310 k to 155 k, the pressure decreases and the temperature decreases, so the volume of the gas will increase.
The effect on the volume of one mole of an ideal gas if the pressure changes from 760 torr to 190 torr and the temperature changes from 310 K to 155 K can be determined using the Ideal Gas Law:
PV = nRT
Where P is pressure, V is volume, n is number of moles, R is the gas constant, and T is temperature in Kelvin.
We can rearrange the equation to solve for volume:
V = nRT / P
First, we'll find the volume at the initial conditions (P1 = 760 torr, T1 = 310 K):
V1 = nRT1 / P1 = n(0.0821 L atm/mol K)(310 K) / (760 torr)
Next, we'll find the volume at the final conditions (P2 = 190 torr, T2 = 155 K):
V2 = nRT2 / P2 = n(0.0821 L atm/mol K)(155 K) / (190 torr)
The change in volume can be found by subtracting the initial volume from the final volume:
ΔV = V2 - V1
Since the number of moles (n) and the gas constant (R) are constant, the change in volume is proportional to the change in pressure and temperature. In this case, the pressure decreases and the temperature decreases, so the volume of the gas will increase.
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The synthesis of C3H4 + H2 to form C2H6 has an enthalpy of –136kJ/mol. Is this reaction endothermic or exothermic?
Answer: exothermic
Explanation: The key is to look at the enthalpy (-136kJ/mol). Since it’s negative, the reaction is losing heat, therefore it’s exothermic.
A material through which electrons can move easily is What
Answer:
Explanation:
A material through which electrons can move easily is referred to as a conductor. Conductors have a high electrical conductivity, which means that electrons can flow through them with relative ease. This is due to the presence of free electrons in the material, which are not tightly bound to individual atoms. Examples of common conductors include metals such as copper, aluminum, and gold.
Which type of cell make up the upper and lower layers of the leaf?
The upper and lower layers of leaves are generally made up of epidermal cells.
The anatomical structure of leavesLeaves are generally made of 3 main tissues, including:
epidermal tissuesmesophyll tissuesvascular tissuesThe epidermal tissues form the outer layers of the leaves - both the upper and lower surfaces. They are made of epidermal cells, some of which form the guard cells around openings called stomata.
Mesophyll tissue or cells are found after the epidermal cells. They consist of two layers of cells - the spongy and palisade mesophylls.
The vascular tissue of leaves are found in the veins. They consist of the xylem and the phloem.
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You mix 2 moles of HBr with 3 moles of KOH in enough water to make 1 L of solution. How much KBr do you expect to make?a. 2 molesb. 5 molesc. 3 molesd. 1 moles
A solution is a homogeneous mixture of one or more solutes dissolved in a solvent. The expected [tex]KBr[/tex] will be formed threetwo moles.
We have [tex]HBr[/tex] as well as week[tex]KOH[/tex]week. This would result in KBR H 20. No surprise that one more racial group has already crossed. We'll also combine two moles of [tex]HBr[/tex]. with three moles of [tex]KOH[/tex].
As a result, there are two moles of [tex]HBr[/tex] reactions to the geometry. H P. R. has two moles. To one HP Mole. R. To a single mole of KBR. This gives us two moles of [tex]KBr[/tex]. That could be produced from the acid, and three moles could be produced in a week. Okay, one Kiwi mole. Another PBR. This results in two moles of [tex]KBr[/tex].
[tex]3moles of KOH(\frac{1 mol of KBr}{1 mol of KOH} )× (\frac{119g of KBr}{1 mol of KBr} )= 238g of KBr.[/tex]
[tex]No. of moles= \frac{given mass}{molar mass} = \frac{238}{119} = 2 moles of KBr.[/tex]
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