If 565 j of heat are added to 44 mol of a monatomic gas at constant volume, then the temperature of the gas will increase by approximately 12.7 K or -260.45°C.
To calculate the change in temperature, ΔT, you would need to know the molar heat capacity (Cv) of the gas. However, the value of Cv can vary depending on the specific gas and temperature range. For a monatomic gas, Cv is typically around 3/2R, where R is the ideal gas constant. If we use this approximation, we can calculate ΔT as follows:
ΔT=Q/nCv
ΔT = 565 J / (44 mol × (3/2)R).
ΔT = 565 J / (44 mol × (3/2) × 8.31 J/mol·K)
ΔT = 12.7 K.
Therefore the temperature of the gas will increase by approximately 12.7 K. If you prefer to express the change in temperature in Celsius, you would subtract 273.15 from the value in Kelvin, so ΔT = 12.7 K - 273.15 = -260.45°C
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Antoine Lavoisier is known for which of the following? (Select all that apply)
a.
studying gravity
b.
discovering oxygen
c.
the theory of general relativity
d.
the law of conservation of mass
e.
the theory of natural selection
Answer:
b. discovering oxygen
d. the law of conservation of mass
a scientist mixes substance a and substance b in a beaker. neither sub-stance a nor substance b can conduct electricity. the material in the beaker changes color, and the beaker becomes very hot. the material left in the beaker conducts electricity. has a chemical reaction occurred? explain your answer.
Yes, a chemical reaction has occurred. When two substances are mixed and there is a change in temperature, color, and the ability to conduct electricity, it indicates that a chemical reaction has taken place.
The change in properties suggests that new compounds have formed and the original substances have been altered.
A chemical reaction is a process in which the chemical bonds between the atoms of one or more substances are broken and new bonds are formed, resulting in the formation of new substances with different properties than the original substances. When two substances, substance "A" and substance "B", are mixed and a change in temperature, color, and conductivity is observed, it suggests that a chemical reaction has taken place. The beaker becoming hot indicates a release of energy, which is typical of chemical reactions. The fact that the material in the beaker now conducts electricity, when neither substance "A" nor substance "B" could do so, further supports that a chemical reaction has occurred, as this change in properties can only be explained by the formation of new compounds with different chemical structures. Therefore, it can be concluded that a chemical reaction has taken place in the beaker.
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the students wanted to deduce the name of the acid they carried out a test that showed that the acid contains sulfate ions. (I)name the reagent that they added to the acid
The acid which contains sulfate ions can be tested by the reagent which is barium chloride.
What are acids?Acids are defined as substances which on dissociation yield H+ ions , and these substances are sour in taste.
According to the number of H+ ions which are generated on dissociation acids are classified as mono-protic , di-protic ,tri-protic and polyprotic acids depending on the number of protons which are liberated on dissociation.
Acids are widely used in industries for production of fertilizers, detergents batteries and dyes.They are used in chemical industries for production of chemical compounds like salts which are produced by neutralization reactions.
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describe the properties of water that influenced your investigation and how this was reflected in your results. (properties of water can include, but are not limited to, water potential, adhesion, cohesion, and surface tension.)
Adhesion and cohesion are two characteristics of water that have an impact on our experiment.
Water molecules have the ability to adhere to other things through their ability to adhere to one another, known as cohesion. Because we saw that the water was able to go up the paper towel more and more as the sugar content increased, these characteristics were represented in our findings. This is because the sugar molecules enhanced the water's surface tension, which, along with the cohesive forces of the molecules, allowed the water to stick to the paper towel more effectively and go higher up the towel. The water was able to go farther up the paper towel due to the increased surface tension and water potential. This is evident from our data, which show that the 0.20M travelled the farthest.
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what two types of energy is usually a product of combustion reactions?
When a chemical combines with oxygen gas, it produces a combustion process that releases electrons in the form of heat and light.
What is Ncert for combustion?Combustion is the name given to the chemical reaction in which a material combines with oxygen to produce heat. A material is considered to be combustible if it can burn. Another name for it is fuel.
Combustion is a form of reaction, right?Redox reactions include combustion processes. An illustration of a combustion process with oxygen acting as the oxidant. A molecule combining C and H reacts with O2 to produce CO2 and H2O in the combustion process, which is the subject of many chemical textbooks. There are situations when the reactant contains additional elements like O, S, or N.
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calculate the freezing point (in degrees c) of a solution made by dissolving 1.63 g of urea {co(nh2)2} in 40.8 g of water. the kfp of the solvent is 1.86 k/m and the normal freezing point is 273.15 k.
The freezing point of the solution made by dissolving 1.63 g of urea in 40.8 g of water is -0.15124°C.
The freezing point of a solution is a measure of the amount of a solute that has been dissolved in a solvent. The freezing point depression of a solution is the difference between the freezing point of the pure solvent and the freezing point of the solution.
Calculating freezing point depression.
ΔTf = Kf * molality
Where:
ΔTf is the change in freezing point (in K)
Kf is the freezing point depression constant (in K/m)
Molality is the ratio of moles of solute to kilograms of solvent (m)
We must first determine the solution's molality:
1.63 g of urea (molecular weight = 60.06 g/mol) is equivalent to 0.0271 moles of urea:
0.0271 moles / 40.8 g of water = 0.000661 moles/g
Next, we can calculate the change in freezing point:
ΔTf = Kf * molality
ΔTf = 1.86 K/m * 0.000661 moles/g
ΔTf = 0.00124 K
Finally, we can calculate the new freezing point of the solution:
273.15 K - 0.00124 K = 272.99876 K
Converting from Kelvin to Celsius:
272.99876 K - 273.15 = -0.15124°C
Therefore, the freezing point of the solution made by dissolving 1.63 g of urea in 40.8 g of water is -0.15124°C.
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The fact that each type of atom has a unique pattern of electron orbits helps explain why?
The fact that each type of atom has a unique pattern of electron orbits because various elements have varying quantities of protons and varied numbers and configurations of electrons causes unique spectral pattern.
Do all atom types have a distinct emission spectrum?
Each atom includes a large number of potential electron transitions, and each transition has a discrete energy difference. An emission spectrum is composed of a variety of transitions that produce different radiated wavelengths. The emission spectra of each element is specific.
Why are emission spectra even present in atoms?When excited electrons from elevated energy levels descend to lower energy levels, atomic emission spectra are emitted. The energy difference between the two energy levels the electron changed between is radiated by them as a photon (light).
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in a system of gas, if we double the temperature what happens to the energy of the particles?
o The energy halves. o The energy quadruples. o The energy doubles. o The energy stays the same.
The kinetic energy average of a gas's molecules will double when its temperature does. This is so since temperature is an indicator of the system's mean particle kinetic energy.
What is the term for temperature?Temperature is a unit used to describe hotness or coolness on any of a number of scales, notably Fahrenheit and Celsius. As according temperature, heat energy will continue moving from a hotter (body with a high temp) to a colder (body with a low temp).
What two sorts of temps are there?The Celsius and Celsius (Centigrade) systems are the two most commonly used temperature scales. Because of the fact that all molecular activity ends at the zero points of the Stirling and Kelvin scales, two more scales, they also known as the absolutely scales.
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what properties does silicon share with carbon that would make silicon-based life more likely than, say, neon-based life or aluminum-based life?
silicon is more likely neon-based life as it is closely related to carbon in periodic table.
carbon's nearest analogue is silicon. Tetravalent elements like silicon and carbon primarily form covalent (non-ionic) compounds. Surprisingly, there aren't many similarities between them other than the fact that both atoms "can make four covalent bonds."
On the periodic table, silicon (Si) is in the same family as carbon (C). Similar to carbon, it can interact with oxygen, create polymers, and establish bonds with four other atoms simultaneously (O2). Silicon's ability to produce molecules large enough to carry biological information could lead to the development of life on its platform.
The thought that silicon-based life, if it could exist at all, may only exist at very high temperatures has given rise to the terms "lavolobes" and "magmobes." Silicon is inert at the mild temperatures in the habitats in which life as we know it exists. Hence, silicon share neon-based life.
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in a combination reaction, of lithium is mixed with of oxygen. the product is an ionic solid. how many grams of each reactant
In a combination reaction, 1.50 g of lithium is mixed with 6.98 g of oxygen. The product is an ionic solid. The reactant will be
First we should write the reaction is:
4Li + O₂ → 2Li₂O
First we should calculate Moles of lithium in 1,50g are:
1,50g × (1mol / 6,941g) = 0,216 moles of Li
Moles O₂ = 6,98g × (1mol / 32g) = 0,218 moles of O₂
The complete reaction of oxygen will be
0,218 mol ₓ (4mol Li / 1 mol O₂) = 0,872 moles of Li.
The excess reactant is oxygen since there are more moles of oxygen than the amount of lithium that is needed.
Lithium is the limiting reactant, hence the product generated is moles of lithium ÷2, that is, 0,108 moles
After the reaction there are 0 moles of Li, 0,218 - 0,216× (1 mol O₂/4 mol Li) = 0,164 moles of O₂ and 0,432 moles of Li₂O. In grams:
0g Li
0,164 mol ₓ (32g / mol) = 5,25g of O₂
0,108mol Li₂O ₓ (29,88g / mol) = 3,23g of Li₂O
Your question is incomplete but most probably your full question was
In a combination reaction, 1.50 g of lithium is mixed with 6.98 g of oxygen. The product is an ionic solid. how many grams of each reactant and product are present ?
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a chemist collects n2 gas over water at 110 c temperature and 1752.6 torr pressure. what is the partial pressure of the n2 gas?
The correct answer is
At sea level with an atmospheric pressure of 760 mm Hg, the partial pressures of the different gases may be computed to be 593 mm Hg for nitrogen, 160 mm Hg for oxygen, and 7.6 mm Hg for argon.
The idea of partial pressure is derived from the fact that each individual gas contributes to the overall pressure in a given proportion, which corresponds to its partial pressure. In order to characterize all the pieces, it is essentially equivalent to taking a percentage or fraction of the whole. Any standard pressure unit can be used to quote partial pressures. Typically, atmospheres or pascals are used (Pa). N m-2 and Pascals are exact equivalents (newtons per square meter).When trying to predict gas flow, it is essential to take partial pressure into account. Keep in mind that gases frequently equalize their pressure in nearby places. An location with a greater partial pressure will have a gas flow, and vice versa.
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true or false: a rigid tank containing ionized gases kept under the influence of a magnetic field is a simple compressible system.
False. A rigid tank containing ionized gases kept under the influence of a magnetic field is not a simple compressible system.
Is keeping under magnetic field influence simple?
A simple compressible system is defined as a system where the pressure, volume, and temperature are related by a simple equation of state, such as the ideal gas law. In such a system, the pressure, volume, and temperature are independent variables, and changes in one of them result in changes in the others.
However, in the case of a rigid tank containing ionized gases kept under the influence of a magnetic field, the behavior of the gases is not described by a simple equation of state. The magnetic field affects the motion of charged particles and creates complex interactions between the particles and the field. This results in a more complex behavior that cannot be described by a simple equation of state.
Therefore, a rigid tank containing ionized gases kept under the influence of a magnetic field is not a simple compressible system.
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Frost appears on a window on a cold winter day. Name the process and whether it is exothermic or endothermic? Select one: O a. Melting, exothermic O b. Deposition, exothermic c. Deposition, endothermic d. Condensation, endothermic
The process that is occurring on the window is called deposition and it is an exothermic process. This occurs when a gas or vapor changes directly into a solid without first becoming a liquid.
Condensation is a process in which a gas turns into a liquid. It is an exothermic process, meaning that it releases energy in the form of heat.
This release of energy lowers the temperature of the surroundings, resulting in a decrease in the heat energy of the water particles. The decrease in heat energy causes the water molecules to slow down and form a liquid.
This process of condensation is what causes frost to appear on a window on a cold winter day.
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What is the volume of 0.1 mole of methane ( )? (one mole of any gas occupies 22.4 l under certain conditions of temperature and pressure. assume those conditions for this question.) question 20 options: 2.2 l 20 l 22.4 l 44.8 l
2.2 L is the volume of 0.1 mole of methane. 1 mole of gas occupy 22.4 L volume at STP .
As we know 1 mole of gas occupy 22.4L volume at STP and the standard temperature and pressure is 273 K and 1 atm.
For 0.1 mole of methane,
0.1/1 × 22.4L
= 2.24 L
Therefore 0.1 mole of methane occupy 2.24 L volume.
Methane is a first compound of the alkane category , it is a colorless, odorless and flammable gas.
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2.0 moles of trifluoroisocyanomethane gas undergoes an isothermal process. if the volume of the gas halves, by what factor does the pressure of the gas change?
The pressure of the gas increases by a factor of 2 when the volume of the gas halves. The Ideal Gas Law was used to calculate the change in pressure that occurred when the volume of the gas was halved.
For an isothermal process, the temperature remains constant. According to the Ideal Gas Law, the pressure, volume, and number of moles of a gas are related as follows:
PV = nRT
Where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is the temperature in kelvin.
Let's assume the initial volume of the gas is V1, the initial pressure is P1, and the final volume is V2. We can use the Ideal Gas Law to relate the initial and final volumes and pressures:
P1V1 = nRT = P2V2
Since n and T are constant, we can rearrange the equation to relate the initial and final pressures:
P2 = P1 x (V1 / V2)
In this case, the volume of the gas halves, so V2 = V1 / 2. Substituting this into the equation, we get:
P2 = P1 x (V1 / (V1 / 2)) = P1 x 2
Therefore, the pressure of the gas increases by a factor of 2 when the volume of the gas halves.
The Ideal Gas Law is used to describe the behavior of gases under different conditions and to predict how a gas will respond to changes in pressure, volume, temperature, and the number of moles. For example, if the temperature of a gas is kept constant, the Ideal Gas Law can be used to calculate the pressure of the gas if its volume is changed.
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which of the following statements is true concerning ideal gases? group of answer choices at stp, 1.0 l of ar(g) contains about twice the number of atoms as 1.0 l of ne(g) since the molar mass of ar is about twice that of ne. the pressure exerted by a gas decreases as the collisions of the gas particles with the walls of the container increases. the pressure would decrease when the temperature of a closed sample of a gas is increased while its volume is decreased. the gas particles in a sample of a gas repel each other, but do not attract one another. the average kinetic energy of the gas particles would increase when the temperature of a closed sample of a gas is increased while its volume is decreased.
The statements that is true concerning the ideal gases is the correct option is : the average kinetic energy of the gas particles would increase when the temperature of a closed sample of a gas is increased while its volume is decreased.
The ideal gas equation is as follows :
P V = n R T
Where
The p is the pressure of the gas
The V is the volume of the gas.
n is the number of the moles
The R is gas constant.
The T is the temperature.
Th pressure is directly related to the temperature and the average kinetic energy. The average kinetic energy will increases as the temperature increases.
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The question is in the photo for you.
The number of grams of KClO₃ needed to make 0.402 moles of oxygen gas is 32.8 grams
How to calculate mass using stoichiometry?Stoichiometry refers to the quantitative relationship between the reactants and products of a specific reaction or equation.
According to this question, pottasium chlorate decomposes to form pottasium chloride and oxygen gas as follows:
2KClO₃ → 2KCl + 3O₂
2 moles of pottasium chlorate decomposes to form 3 moles of oxygen gas.
0.402 moles of oxygen gas will be produced as a result of the reaction of 0.268 moles
mass = 0.268 moles × 122.55 g/mol
mass = 32.8 grams.
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which of the following pure substances has the highest boiling point? group of answer choices cbr4 cf4 ci4 ch4 ccl4
The boiling points of pure substances are directly proportional to their molar mass. Moreover, boiling points are directly proportional to molecular attractions. the given, CBr4 has the highest boiling point.
The molar mass of a substance is the mass in grams of one mole of the compound.
A mole is the number of entities present in a substance, such as atoms, molecules, and ions. A mole of any substance is 6.0221023 molecules. Just as we use a standard value to calculate different things, such as 1 dozen = 12 items, we use the mole to calculate the size of the smallest entities quantitatively. We'd all like to know how many molecules are present in a given substance. Molecules and atoms are extremely small, both in size and mass. To calculate the molar mass, add the atomic masses (atomic weights) of all atoms in the molecule.
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given the electronegativities below of elements found on an alien planet, which covalent single bond is most polar?
The oxygen covalent single bond is the most polar among the elements discovered on an alien planet given their electronegativities below.
Extremely high ionization energy elements cannot take electrons, and equally, extremely low electron affinity elements cannot transfer electrons. The atoms of these elements commonly exchange electrons with other atoms of the same element or with atoms of other elements in order for both atoms to achieve stability by creating an octet configuration in their respective valence shells. Bonds between objects of different or similar types that share electron pairs are known as covalent bonds.
When both atoms contribute an equal number of electrons to the bonding process, a covalent connection is formed. The shared pair sometimes referred to as the bonding pair, is this kind of bonding electron pair. A different term for covalent bonding is molecular bonds.
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Why do you weigh the solid NaOH by difference instead of directly weighing it on a weigh boat?
The solid NaOH is weigh by difference since it is a deliquescent material that when exposed to environment, it absorbs moisture. It would leads to weigh the exact amount of the solid be difficult.
What benefits does direct weighing offer?If the weighing equipment is calibrated and used correctly, the precision of weighing is its fundamental purpose. Additionally, no errors will be introduced by transforming other units to weight because a FLW inventory must always be reported in weight units.
What distinguishes weighing by difference from direct weighing?Balances are employed in the laboratory for the goal of determining mass. Two different methods are used. First is direct weighing, where the sample is placed directly on the balance and the mass is recorded. A sample is constantly weighed during weighing by difference.
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greenhouse gases like co2 trap the outgoing thermal radiation from the surface that cools the earth, and only allow that radiation to be emitted to space and cool the climate system from an atmospheric altitude of about 12 km in the ir regions (wavelength bands) where co2 absorbs. describe all the changes that occur in the climate system what happens after we increase co2 in the atmosphere. assume that a radiative balance (ein
When the atmospheric concentration of CO2 increases, the greenhouse effect intensifies, and more thermal radiation is trapped and re-radiated back towards the surface. This leads to a warming of the surface, as well as the overall climate system, including the atmosphere.
When CO2 is increased in the atmosphere:
The total CO2 opacity of the atmosphere increases, meaning that the ability of CO2 to trap outgoing thermal radiation from the surface and prevent its escape to space increases.As a result of the increased CO2 opacity, the Earth's surface warms due to the trapping of more thermal radiation.To maintain a radiative balance (EIN = EOUT), the increased radiation from the warmer surface balances the reduced radiation from the CO2 bands.The altitude where CO2 can emit radiation to space does not decrease to 6 km. The altitude where CO2 can emit radiation to space depends on the atmospheric temperature profile and pressure, which are determined by the overall radiative balance, and not just the amount of CO2 in the atmosphere.Learn more about radiation here:
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Which action most likely helped form feature X?
The action that most likely helped form feature X is B. Sediments were deposited where the river met the ocean.
What is a Land Form?An anthropogenic or natural land feature on the solid surface of the Earth or another planetary body is referred to as a landform.
A given terrain is made up of several landforms, and topography refers to how these landforms are arranged in the surrounding area.
Hence, feature X on the given map was most likely formed through the deposition of sediments.
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Which action most likely helped from feature X?
answer choices
Wind blew sand from the beach into large piles.
Sediments were deposited where the river met the ocean.
Waves pushed mud from the bottom of the ocean onto land.
Land was exposed when water was pulled offshore during low tide.
if one electron in an atom is excited but does not have enough energy to escape, the energy of the excited electron must have one of a set of quantized values.
The statement, if one electron in an atom is excited but does not have enough energy to escape, the energy of the excited electron must have one of a set of quantized values, is true.
What is an electron?An electron is a subatomic particle with negative charges that can be free or connected to the atom (not bound). The electron, which is attached to an atom, is one of the three primary types of particles found there. Protons and neutrons make up the other two.
How do protons and electrons differ?A subatomic particle having a negative charge is an electron. A subatomic particle having a positive charge is called a proton. The powerful nuclear force holds protons together in the nucleus of an atom. A kind of subatomic particle without charge is the neutron (they are neutral).
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The complete question is -
If one electron in an atom is excited but does not have enough energy to escape, the energy of the excited electron must have one of a set of quantized values. a. True b. False
aldehydes have a central carbon bound to two other carbons (True or False)
False. The carbonyl group (C=O) and a central carbon are both linked together in an aldehyde.
What constitutes carbon?The nucleus of a carbon atom is made up of six protons and six neutrons, and it is encased in six electrons. According to quantum physics, the first free atoms must occupy the innermost atomic orbiting, while the wavefunctions of the following four electrons only partially fill both first normal and three second primary orbitals.
What uses does carbon serve?Metal smelting makes use of impure acid in the presence of coke made from coal and charcoal made from wood. For steel and iron sectors in particular, it is essential. Graphite is utilized in furnace linings, electric motor brushes, and pencils. Activated charcoal is employed in filtering and purification processes.
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If we triple the temperature and double the volume, what would the new pressure of the system be?Group of answer choicesa. 20 atmb. 15 atmc. 7.5 atmd. 10 atm
If we triple the temperature and double the volume, The new pressure of the system be 10atm.
The equation of state for a fictitious ideal gas is known as the ideal gas law. Although it has several drawbacks, it is a decent approximation of the behaviour of numerous gases under various circumstances. The formula for the ideal gas equation is
To find pressure we us ideal gas equation:
PV = nRT
Therefore, if we multiply Volume by 2 and Temperature by 3, we get.
hence, by adding.
Given that nR are constant throughout, P (2V)=nR(3T).
then would only consider variables
P = 3T/2V
So p = 1.5 T/V
It can alternatively be expressed as P/1.5=T/V.
Pressure would therefore drop by a factor of 1.5 division.
The new pressure of the system is 10atm.
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what happens to the freezing point of water when ethylene glycol is added?a)(a) , (b)-, (c) b)(a) -, (b)-, (c) c)(a) , (b)-, (c) -
The freezing point of the solution decreases compared to pure water.
When ethylene glycol is added to water, the freezing point of the solution decreases compared to pure water.
This is because ethylene glycol is a non-volatile, non-ionic solute that decreases the freezing point of water by lowering the temperature at which ice forms.
This is due to the fact that the solute molecules interfere with the hydrogen bonding between the water molecules, making it harder for the water molecules to arrange themselves into the ordered structure of ice.
As a result, the freezing point of the solution is lowered, and the solution remains liquid at lower temperatures than pure water.
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you mix 2 moles of HBr with 3 moles of KOH in enough water to make 1 L of solution. what is the pH of your final solution?
a. 7
b. 1
c. 14
d. 14
e. 13
As the reaction is a neutralization reaction, mixing 2 moles of HBr with 3 moles of KOH will give solution of pH of 7.
What is a mole?Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.
It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.
It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole .
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calculate the approximate freezing point of a solution prepared by dissolving 10.0 g of naphthalene (c10h8) in 300 g of cyclohexane. pure cyclohexane freezes at 6.60 oc. kf of cyclohexane
Kf of cyclohexane is 20.0°C kg/mol, so the approximate freezing point of the solution is 6.08°C.
The freezing point depression of a solution is calculated using the equation: ΔTf = Kf x molality, where Kf is the cryoscopic constant and molality is the concentration of solute in the solution (in mol/kg).
To calculate the molality of the solution, first we need to find the number of moles of naphthalene in 10.0 g. The molecular weight of naphthalene is 128.2 g/mol, so 10.0 g is equal to 0.078 mol.
Next, we need to calculate the molality of the solution: 0.078 mol / 300 g = 0.026 mol/kg.
Finally, we can calculate the freezing point depression: ΔTf = 20.0°C kg/mol x 0.026 mol/kg = 0.52°C.
So, the approximate freezing point of the solution is 6.60°C - 0.52°C = 6.08°C.
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Since an electron has a negative charge, it will move in an electromagnetic field under the Coulomb force. When an electron moves in the opposite direction as the direction of the electric field, we can conclude that: A. It moves from a high potential to a low potential, and its electric energy decreases. B. It moves from a low potential to a high potential, and its electric energy decreases. C. Both its electric potential and electric potential energy stay constant. D. It moves from a low potential to a high potential, and its electric energy increases. E.It moves from a high potential to a low potential, and its electric energy increases.
Option D: It loses electric potential energy when it transitions from a high potential to a low potential. When put in an electric field, a positive charge has a tendency to flow along the lines of the electric field.
What is the straightforward meaning of potential energy?Potential energy is a form of stored energy that is dependent on the link between different system components. When a spring is squeezed or extended, its potential energy increases.
What is children's potential energy?Potential energy refers to the energy that an item has stored in it as a result of its location or condition. Potential energy exists in a stretched spring, a newspaper held over his head, and a cycle on top of a mountain.
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a sample of pure lithium nitrate contains 7.99% lithium by mass. what is the % lithium by mass in a sample of pure lithium nitrate that has twice the mass of the first sample?
According to the query, the bigger sample's lithium content is 15.98% by mass.
What is the purpose of lithium nitrate?Lithium nitrate is a crystalline (sand-like), colorless or white powder or granule. It serves as a heat-exchange medium and scientific reagent.
Let's name the first sample's mass "m1." Since the first sample has a lithium content of 7.99% by mass, its lithium mass is 0.0799 * m1 g.
Take into account a measurement of purest lithium nitrate that is two times as massive as the initial sample. Consider that mass "m2" for short. The weight of lithium with in sample drawn equals 0.0799 * 2 * m1 Equals 0.1598 * m2 g since m2 = 2 * m1.
As a result, the bigger sample's greater% lithium by mass is (0.1598 * m2) / m2 * 100% = 0.1598 * 100% = 15.98%
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