a. Stellar Nebula:
The fusion process in a stellar nebula begins with the fusion of hydrogen atoms to form helium.
As the fusion continues, helium accumulates and eventually enough pressure and heat are generated to trigger the fusion of helium into heavier elements, such as carbon, nitrogen, and oxygen.
b. Average/Medium Sized Star:
In an average-sized star, hydrogen fusion continues and generates more heat and pressure, allowing for the fusion of heavier elements such as helium, carbon, and oxygen.
As the fusion process continues, heavier elements such as neon, magnesium, and silicon are produced, leading to the formation of heavier elements such as iron.
c. Red Giant:
In a red giant, the outer layers of the star expand and cool, exposing the core. The core then contracts and heats up, causing the fusion of helium into heavier elements such as carbon, nitrogen, and oxygen.
The fusion process in a red giant generates a large amount of energy and creates elements such as neon, magnesium, and silicon, as well as heavier elements.
d. Red Supergiant:
In a red supergiant, the core continues to contract and heat up, causing the fusion of heavier elements such as carbon, nitrogen, and oxygen.
The fusion process in a red supergiant generates a tremendous amount of energy and leads to the formation of elements such as neon, magnesium, and silicon, as well as even heavier elements.
What elements are being fused?The energy from the sun's nuclear fusion affects the Earth in several ways:
Energy from the sun drives Earth's climate and weather patterns, including the water cycle and atmospheric circulation.Solar energy provides the energy for photosynthesis, which is the process that plants use to produce food and release oxygen into the atmosphere.The sun's energy also drives the Earth's magnetic field, which protects the planet from harmful solar radiation and particles.Read more about nuclear fusion here:
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which substance is lowest in unsaturated fats? which substance is lowest in unsaturated fats? salmon corn oil beef canola oil
Unsaturated fats are least abundant in beef oil. Monounsaturated and polyunsaturated fats are good fats that help reduce the risk of heart disease.
How do saturated and unsaturated fat differ from one another?In contrast to unsaturated fatty acids, which have at least one double bond in the fatty acid chain, saturated fatty acids have no double bonds between the individual carbon atoms. Unsaturated fats are often liquid and come from plants, whereas saturated fats are normally solid at room temperature and come from animal sources.
The benefits of unsaturated fat.Unsaturated fats, which are liquid at room temperature, are regarded as healthy fats because they can lower blood cholesterol levels, reduce inflammation, maintain healthy cardiac rhythms, among other positive effects.
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One property of a wave is that it changes speed from one substance to another. What happens to the light wave when it travels from the air and through the glass?
Answer:
Explanation:
When light travels from air to glass, it slows down due to the change in the refractive index. This causes the wave to bend, a phenomenon known as refraction. The amount of bending depends on the difference in refractive indices between the two materials, and the angle of the incoming wave.
1) 5 small and 4 large cups of coffee cost $22.
2 small and 1 large cups of coffee cost $7.
58 + 4( ) = 22
2(58 + 4L = 22)
5(28 + 1L = 7)
Small
coffee =
Large
coffee =
large = ?
$2
22) → →
O
O
$3
O
O
$4
O
small = ??
Small coffees cost $
Large coffees cost $
$5 $6
O
O
O
O
2 points
$7
O
O
what is the hybridization at each carbon atom in the molecule? drag the appropriate labels to their respective targets.
The hybridization at each carbon atom in the molecule is Cabon-1 = SP^2, Cabon-2 = SP^2, Cabon-3 = SP^3, Cabon-4 = SP, Cabon-5 = SP, Cabon-6 = SP^3
Hybridization is the mixing of atomic orbitals to form a new set of hybrid orbitals with different energy levels and geometries. This concept is used to explain the bonding and molecular structure of molecules, particularly in organic chemistry. The process of hybridization occurs when atoms share electrons in chemical bonds, and the resulting hybrid orbitals are used to explain the bonding patterns in molecules.
There are several types of hybridization, including sp3 hybridization, sp2 hybridization, and sp hybridization, which are determined by the number of orbitals involved in the hybridization process. Each type of hybridization results in different molecular shapes and bond angles, and these molecular structures are important in determining the physical and chemical properties of the molecule.
Hybridization plays a crucial role in understanding chemical bonding and the molecular structure of compounds. It provides a way to explain the behavior of molecules and the chemical reactions they undergo, and helps to explain the reactivity, stability, and properties of various compounds.
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Experiment: Use the Gizmo to design a hot or cold pack that meets each of the following requirements. When you solve the challenge, describe the bag material, type of powder, powder mass, and volume of water you used. The outside bag temperature reaches 54 ºC (but no higher) within 2 minutes. The temperature does not go above 50 ºC, and does not go below 40 ºC for at least 25 minutes. The temperature reaches 8 ºC in less than 2 minutes. The temperature does not go below 10 ºC, and stays below 20 ºC for at least 15 minutes.
The bag material is of insulator type. Heat does not no flow through insulator. The outside bag temperature reaches 54 ºC.
What is thermodynamics?The study of thermodynamics examines how heat, work, temperature, as well as energy are related. The general topic of thermodynamics is the energy that is transferred from one location or form to another. The fundamental idea would be that warmth is a type of energy that is equivalent to a specific quantity of mechanical labor.
The outside bag temperature reaches 54 ºC (but no higher) within 2 minutes. The temperature does not go above 50 ºC, and does not go below 40 ºC for at least 25 minutes. The temperature reaches 8 ºC in less than 2 minutes. The temperature does not go below 10 ºC, and stays below 20 ºC for at least 15 minutes. The bag material is of insulator type.
Therefore, the bag material is of insulator type.
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the ph of the stomach can influence the ionization of drugs such as aspirin (aka acetylsalicylic acid or hasp). given that at equilibrium the ph of a 0.1 m aspirin is 2.24, what is the pka of aspirin?
The ph of the stomach can influence the ionization of drugs such as aspirin (aka acetylsalicylic acid or hasp). given that at equilibrium the ph of a 0.1 m aspirin is 2.24. So the pKa of aspirin is approximately +∞.
The pKa of aspirin can be calculated from the pH of a 0.1 M solution of aspirin at equilibrium using the following equation:
pKa = pH + log([A-]/[HA])
where,
[A-] and [HA] = the concentrations of the aspirin ionized (A-) and non-ionized (HA) forms, respectively.
At a pH of 2.24, the concentration of the ionized form of aspirin is much higher than that of the non-ionized form,
so we can assume that
[A-] ≈ 0.1 M
[HA] ≈ 0.
Substituting these values into the equation, we get:
pKa = 2.24 + log(0.1/0) = 2.24 + log(infinity) = 2.24 + +∞ = +∞
So the pKa of aspirin is approximately +∞.
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what is the effect of impurities on the melting point of a compound? question 3 options: makes it higher makes the range wider makes the range narrower makes it black
The presence of even a small amount of impurity will lower a compound's melting point by a few degrees and broaden the melting point temperature range.
The melting point is lowered and the boiling point is raised by impurities. This is because it stabilizes the liquid phase and makes it more beneficial from an energy standpoint. After that, it raises the temperature limit for gaseous molecules and lowers it for liquids.
When ice has contaminants, its melting point is lowered. When ice and salt are combined, this is utilized to create the freezing combination. Ice cream and kulfis are created using the freezing mixture.
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calculate the vapor pressure (in torr) at 298 k in a solution prepared by dissolving 15.2 g of the non-volatile non-electrolye urea {co(nh2)2} in 196 g of methanol. the vapor pressure of methanol at 298 k is 122.7 torr.
The vapor pressure at 298 K for this solution is 117.80 Torr.
By the formula of Raoult's law:
P pure sv° - P sl = P pure sv° . X (molar fraction)
ΔP = P pure sv° . X (molar fraction)
122.7 Torr - P sl = 122.7 Torr . X
Molar mass urea CO(NH₂)₂ = 60.06 g/m
Molar mass methanol = 32.04 g/m
Moles for urea: 15.2 g / 60.06 g/m = 0.253 moles
Moles for methanol: 196 g / 32.04 g/m = 6.117 moles
X (molar fraction) = moles from solute / moles from solute + moles from solvent
X (molar fraction) = 0.253 / 0.253 + 6.117 = 0.04
122.7 Torr - P sl = 122.7 Torr . 0.04
122.7 Torr - 4.908 Torr = P sl
117.80 Torr = P sl
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which of the following conclusions were found in the experiment? select all that apply. check all that apply the liquid form of water is less dense than the solid form. the liquid form of water is less dense than the solid form. the solid form of oil is denser than the liquid form. the solid form of oil is denser than the liquid form. water exhibits the highest amount of adhesion. water exhibits the highest amount of adhesion. alcohol has a high heat capacity. alcohol has a high heat capacity. alcohol is not very cohesive. alcohol is not very cohesive.
The right options are b, c and e. a) The solid form of oil is denser than the liquid form. b) Water exhibits the highest amount of adhesion. e)Alcohol is not very cohesive.
The solid form of oil is denser than the liquid form:
Oil is denser in its solid state than it is in its liquid state.
The strongest adhesion is found in water.
A substance's density is a measurement of how heavy it is in relation to its size. API measures oil density, which can be estimated using formulas that take oil density into account. The more thick or heavier the oil, the lower the API.
Viscous heavy oil is available with more additives and a somewhat different chemical make-up. Therefore, liquid oil may have a different density than solid oil, but it will still be lighter.
Water exhibits the highest amount of adhesion:
Important water qualities like adhesion and cohesion have an impact on how water behaves everywhere, from plant leaves to your own body.
Alcohol is not very cohesive:
Alcohol is not a particularly strong unifier. The scientists have looked at a variety of alcohol and water mixes. They demonstrate that the specific heat of these mixes is greater than the specific heat of water itself, up to an alcohol strength of roughly 36%.
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Full question:
which of the following conclusions were found in the experiment? select all that apply. check all that apply.
a) The liquid form of water is less dense than the solid form.
b) The solid form of oil is denser than the liquid form.
c) Water exhibits the highest amount of adhesion.
d) Alcohol has a high heat capacity.
e) Alcohol is not very cohesive.
a solution is made by mixing of acetone and of methanol . calculate the mole fraction of acetone in this solution. round your answer to significant digits.
The mole fraction of acetone in this solution is 0.31 to 2 significant digits. The mole fraction of a solute in a solution can be calculated as the number of moles of the solute divided by the total number of moles of both solute and solvent in the solution.
First, we need to calculate the number of moles of acetone and methanol:
moles of acetone = 90 g / (58.08 g/mol) = 1.54 mol
moles of methanol = 108 g / (32.04 g/mol) = 3.36 mol
Next, we add up the moles of both solute and solvent:
total moles = 1.54 mol + 3.36 mol = 4.90 mol
Finally, we can calculate the mole fraction of acetone as follows:
mole fraction of acetone = (1.54 mol of acetone) / (4.90 mol) = 0.31
So the mole fraction of acetone in this solution is 0.31 to 2 significant digits.
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Complete question:
A solution is made by mixing 90. g of acetone ((CH₃)₂CO) and 108. g of methanol (CH₃OH). Calculate the mole fraction of acetone in this solution. Round your answer to 2 significant digits. X?
a generic element, a, is composed of two isotopes, 208a and 204a. 208a has a natural abundance of 55% and an isotopic mass of 207.98 amu, and 204a has a natural abundance of 45% and an isotopic mass of 203.97 amu. what is the average atomic mass of this element?
The average atomic mass of elements 208A and 204A is 206.17 g/mol.
The average atomic mass shows the relationship between the mass and the number of atoms in a common sample of an element.
Isotope 208A
Abundance = 55%Mass = 207.98Isotope 204A
Abundance = 45%Mass = 203.97 amuFormula:
Average atomic mass = (Mass x Abundance)₁ + (Mass x Abundance)₂/100
Average atomic mass = (207.98 x 55) + (203.97 x 45)/100
Average atomic mass = 11438.9 + 9178.65/100
Average atomic mass = 206.17
So, the answer is 206.17 g/mol
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during a recrystallization, if more solvent than necessary was used, how would the recovery be affected?
If more solvent than necessary is used during a recrystallization, the recovery of the desired product will be lower. This is because more of the product will be dissolved in the extra solvent, resulting in lower yields.
Additionally, the presence of the extra solvent could also lead to contamination of the product, further reducing the amount of the desired product recovered.
Furthermore, the extra solvent could affect the solubility of the desired product, resulting in an incomplete recrystallization and a lower recovery rate of the desired product.
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qual masses of he and ne are placed in a sealed container. what is the partial pressure of he if the total pressure in the container is 6 atm?
If equal masses of He and Ne are placed in a sealed container, the partial pressure of He in the container would be 3 atm, as the total pressure is 6 atm and the partial pressure of Ne would be 3 atm as well.
The partial pressure of a gas in a container is determined by the amount of the gas present in the container and its temperature. In a sealed container, the amount of gas present is fixed, so the pressure of each gas is determined solely by its temperature. In the case of equal amounts of He and Ne, the partial pressure of He would be equal to the partial pressure of Ne, resulting in a total pressure of 6 atm.
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in which of the molecules below is the carbon-carbon distance the shortest? a. h2cch2 b. h-cc-h c. h3c-ch3 d. h2ccch2 e. h3c-ch2-ch3
In the molecules given, the shortest carbon-carbon (C-C) distance is typically found in molecule "b" (H-C=C-H). Option B is correct.
The shortest carbon-carbon (C-C) distance is found in H-C=C-H. This is because the double bond between the two carbon atoms in this molecule will requires the carbon atoms to be closer together than in the other molecules.
In general, double bonds give result in a shorter C-C distance as compared to single bonds. This is due to the increased electron density in the region between the two atoms in a double bond, which strengthens the bond as well as pulls the atoms closer together.
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in a double replacement reaction the reactants are usually a. positively charged ions only b. positively and negatively charged ions c. negatively charged only d. metals and halogens
In a double replacement reaction the reactants are usually positively charged ions only.
What are ions?An ion is defined as an atom or a molecule which has a net electrical charge. There are 2 types of ions :1) cation 2) anion . The cation is the positively charged ion and anion is the negatively charged ion . As they are oppositely charged they attract each resulting in the formation of ionic bond.
Ions consisting of single atom are mono-atomic ions while which consists of two or more ions are called as poly-atomic ions . They are created by chemical interactions . They are very reactive in their gaseous state and rapidly react with oppositely charged ions resulting in neutral molecules.
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4. the formula mass of propionic acid is 74.08 g/mol and its density is 0.9880 g/ml. what is the volume of 0.250 moles of propionic acid?
the volume of 0.250 moles of propionic acid is 0.257 mL.
The density of a substance is a measure of its mass per unit volume, and it is usually expressed in units of grams per milliliter (g/mL). To find the volume of a substance, we can divide its mass by its density. In this case, we have the formula mass of propionic acid, which is 74.08 g/mol, and its density, which is 0.9880 g/mL.
To find the volume of 0.250 moles of propionic acid, we first need to find its mass. We can do this by multiplying the number of moles (0.250) by the formula mass (74.08 g/mol):
0.250 moles × 74.08 g/mol = 18.52 g
Once we have the mass, we can then find the volume by dividing the mass by the density:
18.52 g / 0.9880 g/mL = 18.52 g / 0.9880 mL = 0.257 mL
Therefore, the volume of 0.250 moles of propionic acid is 0.257 mL.
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sealed heparinized arterial blood was left at room temperature for one hour. which of the following alterations are most likely to occur? group of answer choices po2 decrease, pco2 decrease, ph decrease po2 decrease, pco2 increase, ph decrease po2 increase, pco2 increase, ph increase po2 increase, pco2 increase, ph decrease
Heparinized arterial blood that was sealed was kept at room temperature for an hour. decreases in pO2, increases in pCO2, and decreases in pH are the most expected alterations.
When a full blood sample is kept at room temperature, red blood cells will continue to engage in glycolysis and other oxidative metabolic processes in vitro. While a low PaCO2 indicates alveolar hyperventilation, an increased PaCO2 indicates alveolar hypoventilation. The pH will be changed by abrupt changes in PaCO2. In general, a respiratory acidosis is indicated by a low pH and a high PaCO2, whereas a metabolic acidosis is indicated by a low pH and a low PaCO2. Under typical physiological circumstances, the partial pressure of arterial carbon dioxide primarily regulates minute ventilation, or the number of liters of air exchanged in the lungs per minute (PaCO2).
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2.write a balanced equation for the reaction of benzoic acid with hydroxide ion. why is it necessary to extract the ether layer with sodium hydroxide?
The balanced equation for the reaction of benzoic acid with hydroxide ion is:
C7H6O2 + OH- -> C7H7O2- + H2O
It is necessary to extract the ether layer with sodium hydroxide because in many organic synthesis reactions, the product is often insoluble in the reaction mixture and may separate as a solid or as an immiscible liquid layer.Sodium hydroxide is often used for this purpose because it helps to dissolve the organic product and make it more accessible for further purification or analysis.
A balanced equation has the same number of atoms of each element in the reactants as in the products. This is achieved by adjusting the coefficients in front of the chemical formulas to represent the correct ratio of reactants to products. The coefficients in a balanced equation also represent the stoichiometry, or the ratios of the amounts of reactants and products that react and form in a chemical reaction.
Balancing chemical equations is an important aspect of chemistry, as it allows us to understand the underlying reaction mechanisms and predict the yield of the reaction products. A balanced equation is also necessary for the calculation of energy changes in a reaction, and for the prediction of reactant and product concentrations over time.
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How many moles 3 M NaOH were used? Recall that 30.0 mL 3 M NaOH were
used? Show work!
Moles NaOH =???
Please I need help
The moles of NaOH can be calculated using the formula:
moles = concentration (M) x volume (L)
First, convert the volume from milliliters to liters:
30.0 mL = 30.0 mL / 1000 mL/L = 0.03 L
Then, use the formula to calculate the moles:
moles = 3 M x 0.03 L = 0.09 moles
So, 0.09 moles of 3 M NaOH were used.
Consider this reaction: you need to make 240 g lioh. how many grams of must you react with excess water? a. 117 g b. 350 g c. 700 g d. 1,050 g
If we need to make 120 g of lithium hydroxide [tex]LiOH[/tex], 350 grams of [tex]Li_{3}N[/tex] must react with excess water. Option B is correct answer.
The reaction equation for the production of lithium hydroxide ([tex]LiOH[/tex]) is:
[tex]Li + H_{2}O[/tex] → [tex]LiOH[/tex]
The balanced equation is:
[tex]2Li + H_{2}O[/tex] → [tex]2LiOH + H_{2}[/tex]↑
The no of moles of [tex]LiOH[/tex] required to make 240 g of [tex]LiOH[/tex] can be calculated using the molar mass of [tex]LiOH[/tex] (23.9 g/mol). The number of moles of Li required can then be calculated using the reaction's stoichiometry.
The amount of Li that must be reacted with excess water can be calculated given the amount of [tex]LiOH[/tex] required.
Option (a) 117 g of Li is insufficient to react and produce 240 g of [tex]LiOH[/tex]. Option (c) uses too much Li, and excess Li is left over after the reaction. Option (d) contains 1,050 g of Li, which is also excessive.
Option (b) 350 g of Li is the correct answer because this amount will react with water to produce the desired amount of [tex]LiOH[/tex].
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COMPLETE QUESTION:
Consider the following reaction
[tex]Li3N (s) + 3H2O (l) -- > NH3 (g) + 3LiOH (l)[/tex]
If you need to make 120 g [tex]LiOH[/tex], How many grams of [tex]Li_{3}N[/tex] must you react with excess water?
a. 117 g
b. 350 g
c. 700 g
d. 1,050 g
How can snowfall be caused by air mass movement and changes?
A violent change in weather occurs as the cold air mass digs underneath the warm air mass creating thunderstorms and snowstorms in the winter.
What is weather?Weather is the state of the atmosphere, describing for example the degree to which it is hot or cold, wet or dry, calm or stormy, clear or cloudy.On Earth, most weather phenomena occur in the lowest layer of the planet's atmosphere, the troposphere,just below the stratosphere.
Weather refers to day-to-day temperature, precipitation, and other atmospheric conditions, whereas climate is the term for the averaging of atmospheric conditions over longer periods of time.When used without qualification, "weather" is generally understood to mean the weather of Earth.
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water is a liquid at room temperature. this is due to?
Answer:
Explanation:
Water is a liquid at room temperature due to its relatively low vapor pressure and high thermal stability.
Water molecules have a combination of hydrogen bonds and dipole-dipole interactions, which result in a moderate level of intermolecular attractive forces. These attractive forces allow water to remain in a liquid state at room temperature, as the energy required to overcome these forces and convert water into a gas (vaporization) is relatively high.
Additionally, water has a high heat capacity, which means that it can absorb a lot of heat energy without undergoing significant temperature changes. This high heat capacity allows water to maintain a stable liquid state over a wide range of temperatures.
Overall, the combination of moderate intermolecular forces and high thermal stability is what makes water a liquid at room temperature.
The products of the reaction between zinc and sulfuric acid are zinc sulfate, hydrogen sulfide, and water. Balance the equation using the electron-transfer method.
Answer:
Hello
The balanced equation for the reaction between zinc and sulfuric acid using the electron-transfer method is:
Zn(s) + H2SO4(aq) → ZnSO4(aq) + H2S(g) + H2O(l)
In this reaction, zinc metal (Zn) donates electrons to the sulfate ion (SO4^2-) to form zinc sulfate, while hydrogen ions (H^+) from the sulfuric acid reduce sulfuric acid (SO4^2-) to form hydrogen sulfide gas (H2S). The hydrogen ions also combine with hydroxide ions (OH^-) from the water to form water molecules (H2O).
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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4. On the night of Diwali, sometimes we have difficulty in breathing. Why?
Answer:
because of the unwanted air it realises
Explanation:
on the night of diwali,sometimes we have difficulty in breathing because of the harmful airs it realises.
how will you confirm the presence of hco3- in baking soda?
An acid can be added to a solution to indicate the occurrence of sodium bicarbonate.. The acid will convert the bicarbonate ion (HCO−3) ( H C O 3 − ) to carbonic acid (H2CO3) ( H 2 C O 3 ) .
What is sodium bicarbonate used for?An acid used to treat acid indigestion and heartburn is sodium bicarbonate. Your doctor may occasionally recommend that you take bicarbonate of soda to lessen the acidity of either blood or urine.
Is sodium bicarbonate harmful to humans?Although bicarbonate isn't usually considered to be one of the most toxic compounds, excessive exposure can have some adverse health effects, such as sneezing and coughing when a lot of powder has been inhaled.
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the molar heat of vaporizationof water is 40.79 kj at 100oc. what is the heat of vaporization of 1 g of water?
The heat of vaporization of 1 g of water is 109J[tex]mol^-1k^-1[/tex].
It's far defined as the quantity of warmth required to elevate the temperature of one g of the substance thru 1 diploma Celcius. Molar warmness capacity: it's miles described as the amount of heat required to elevate the temperature of one mole of the substance thru 1 diploma celsius.
The molar warmth ability of a chemical substance is the amount of energy that should be delivered, inside the shape of warmth, to at least one mole of the substance so that it will cause an increase of 1 unit in its temperature. as an alternative, it's miles the heating ability of a pattern of the substance divided via the quantity of substance of the pattern; or also the precise heat potential of the substance instances its molar mass. The SI unit of molar warmth capacity is joule per kelvin consistent with mole, J⋅okay−1⋅mol−1.
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suppose you are working with a naoh stock solution but you need a solution with a lower concentration for your experiment. calculate the volume (in ml) of the 1.382 m stock naoh solution needed to prepare 250.0 ml of 0.1325 m dilute naoh solution.
The volume (in ml) of the 1.382 m stock naoh solution needed to prepare 250.0 ml of 0.1325 m dilute naoh solution is 23ml.
The equation you need is
M1V1 = M2V2
My personal preference is to convert volumes to Liters.
M1= 1.326 M
M2 = 0.1239 M
V1 = X L
V2 = 250 mL = 0.25 L
V1 = M2V2/ M1 = 0.1239 M(0.25 L)/ 1.326 M = 0.023 L = 23 mL
The number of moles per litre of solvent is the definition of concentration. Calculating moles involves dividing mass by molar mass. when a specific number of moles of NaOH dissolve in a specific number of litres of a solvent Concentration is then calculated as follows: moles of NaOH/liters of solvent.
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PLEASEEE HELPPPPPPPPPPPPPPP
_____ involves keeping the item for a short amount of time before moving it elsewhere.(1 point)
Responses
Loading
Loading
Unloading
Unloading
Receiving
Receiving
Holding
Answer:
Holding
Explanation:
because it's making a sense
60 ml of a 1.0 m solution of h2so4 is mixed with distilled water to make 1 l of solution. what is the molarity? select one: a. 0.30 m b. 0.03 m c. 0.09 m d. 0.06 m
Answer:
D- 0.06 M
Explanation:
using the dilutions formula m1v1=m2v2 we can substitute the values.
note- 1l=1000ml
1(60)=m2(1000) and solve for m2 via algebra you get .06 M