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You need the balanced symbol equation for the reaction. The numbers in front of the formulae show the mole ratios. For example, in the thermal decomposition of calcium carbonate:
CaCO3 --> CaO + CO2
The equation is balanced.
The mole ratio between CaCO3 and CO2 is 1:1 because there is 1 mole of CaCO3 for every mole of CO2
To convert mole fraction to volume fraction of liquid, you can use the ideal gas law to relate the number of moles to the volume of the liquid. The volume fraction of the liquid is then calculated by dividing the volume of the liquid by the total volume of the solution.
Mole percent is the mole fraction (X) for a component of a mixture times 100.
If you have a solution of 5.0g NaCl and 25.0g H2O, you can find the mole fraction and mole percent for each. The sum of all percents of all of the components of a mixture equals 100.
Determine the moles (n) of NaCl and H2O.
5.0g NaCl x 1mol NaCl/58.44g NaCl = 0.086mol NaCl
25.0g H2O x 1mol H2O/18.016g H2O = 1.39mol H2O
Determine mole fractions (X) of NaCl and H2O.
The sum of all mole fractions in a solution = 1.
XNaCl = nNaCl/(nNaCl + nH2O) = 0.086mol NaCl/(0.086mol NaCl + 1.39mol H2O) = 0.58mol NaCl
XH2O = 1 - 0.58mol = 0.42mol H2O
Determine the mole percent of NaCl and H2O.
Mole percent of NaCl = XNaCl x 100 = 0.58 x 100 = 58%
Mole percent of H2O = XH2O x 100 = 0.42 x 100 = 42%
Mole fraction and mole percent are essentially describing the same quantity, only mole percent uses the conversion of a number to a percentage. That's all the difference there is. Hence, a mole fraction of 0.134 for a component in a mixture is equivalent to 13.4 % in mole percent of that component. Mole percent spans the range from 0 to 100% while mole fraction spans the real values from 0 to 1.
mole fraction= moles of component/total numbers of moles of components
number of moles of solute/solvent divided by number of moles of the solution
Mole Fraction formulaMole fraction is the number of moles of a substance divided by the total number of moles in the solution.Mole Fraction =moles of substance ATotal Moles of solution
Mole fraction to volume fraction could be converted using the molar mass and the density of the particles involved in the liquid.
Multiply moles times the molar mass of the substance in grams/mole.
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How do you calculate mass of an unknown liquid in grams per mole?
To calculate the mass of an unknown liquid in grams per mole, you would need to know the substance's molar mass (g/mol) and the amount of the substance in grams. Then, divide the mass in grams by the molar mass to get the value in grams per mole.
Molar volume of liquid is greater than molar volume of gas. why?
The molar volume of a liquid is greater than that of a gas because in a liquid, the particles are closer together and have stronger intermolecular forces holding them in place, resulting in a higher density compared to a gas where particles are more spread out and have weak intermolecular forces. This leads to a smaller volume per mole for gases compared to liquids.
Explain the henry's law about dissolution of in a liquid?
Henry's law states that, the partial pressure of the gas in vapour phase is proportional to the mole fraction of the gas in the solution.
What is the mole fraction of solute and solvent is equal to?
When the mole fraction of solute and solvent is equal, it means that both components are present in equal amounts in the solution. This would correspond to a mole fraction of 0.5 for both the solute and solvent.
Why One mole should represent the same volume?
One mole represents the same number of particles, regardless of the substance. Since the volume that a mole occupies is determined by the substance's molar mass and density, one mole of any substance at the same conditions of temperature and pressure will have the same volume.
State relation between mole fraction and Volume fraction?
For Ideal gases, mole fraction=volume fraction
When can volume fraction be equal to mole fraction?
The volume fraction of a substance is equal to the mole fraction for ideal gas mixture
Why mole fraction does not dependend upon temperature?
because mole fraction doesnot depend on volume
What is the mole fraction of oxygen in a gas mixture that is 37 percent oxygen and 63 percent nitrogen in volume?
To find the mole fraction of oxygen, first convert the percentages to fractions: 37% oxygen is 0.37 and 63% nitrogen is 0.63. Since the total mole fraction in a mixture is 1, the mole fraction of oxygen would be 0.37/(0.37 + 0.63) = 0.37/1 = 0.37. Therefore, the mole fraction of oxygen in the gas mixture is 0.37.
What are the mole fraction and molality of ethanol -C2H5OH in an aqueous solution that is 45.0 percent ethanol by volume-The density of water is 1.00g per mL and that of ethanol is 0.789 grams per mL?
First, calculate the volume percentages of ethanol and water in the solution. Since we know the density of both solvents, convert the percentages to mass (using density and volume). Then calculate the mole fraction of ethanol by dividing the moles of ethanol by the total moles of all components in the solution. Finally, calculate molality using the moles of solute (ethanol) and the mass of the solvent (water).
How do you solve mole to mole Stoichiometry problems?
To solve mole to mole stoichiometry problems, first write a balanced chemical equation. Convert the given amount of the starting substance (in moles) to moles of the desired substance using the mole ratio from the balanced equation. Finally, convert the moles of the desired substance to the desired unit, such as grams or volume, if necessary.
What formula do you use to find a solution stregth?
Your question doesn't have a single answer. In Chemistry solution strength is usually calculated in moles pe liter of mole per kilogram or as a mole fraction ( moles per mole) but can also be mass per liter, mass per mass, volume per volume, percent by mass, or percent by volume.
What is the mole fraction of solute in a 3.82 m aqueous solution?
To find the mole fraction of solute, you need to know the moles of solute and solvent. In this case, the moles of solute can be calculated by multiplying the molarity of the solution by the volume of the solution. Once you have the moles of solute and solvent, you can find the mole fraction of solute by dividing the moles of solute by the total moles of solute and solvent.
Why mole fraction is independent of temperature?
as we define mole to be mass of the solute divided by molecular mass of the solute so all the solutes are taken in the solid form not in the liquid like we take 1L in molarity,so solids are generally independent of temp thats why both molality and mole fraction are independent of temperature
What are the necessary steps to solve a volume to volume stoichiometry problem?
Write a balanced chemical equation for the reaction Convert the given volume of the starting substance to moles using its molar volume Use the mole ratio from the balanced equation to find the moles of the desired substance Convert the moles of the desired substance to volume using its molar volume
Mass percent of sol of benzene in toulene when mole fraction of benzene is 0.40?
To calculate the mass percent of benzene in the solution, we first need to convert the mole fraction of benzene to mass fraction using the molecular weights of benzene and toluene. Then, we can use the formula: Mass percent = (mass fraction of benzene / total mass of solution) x 100 Given the mole fraction of benzene as 0.40, we can use this information to determine the mass fraction and then calculate the mass percent of benzene in the solution.
How do you calculate mass of an unknown liquid in grams per mole?
To calculate the mass of an unknown liquid in grams per mole, you would need to know the substance's molar mass (g/mol) and the amount of the substance in grams. Then, divide the mass in grams by the molar mass to get the value in grams per mole.
