How do you calculate the volume from molar ratio?

Answer 1

Molar mass is the mass that is occupied by one mole of any substance. Unit is g/mol.

Molar volume is the volume that is occupied by one mole of any substance. Unit is L/mol.

Answer 2

Convert the grams in one litre to moles by dividing grams (g) by molar mass (g/mol) and you'll find the number of moles in the same litre (mol/l). This is 'molarity'

You always should check for the correct calculus by doing the same with the unit of the numbers as you did with the numbers itself (multiply and divide).

For this particular example of calculus, it 'goes' as follows:

(g/l) / (g/mol) = (g) * (l-1) * (g-1) * (mol-1)-1 = (l-1) * (mol-1)-1 = (mol+1 * l-1) = mol/l

Answer 3

so the atomic number on your Periodic Table is in g/mol, eg H = 1.00794 g/mol

so in every 1.00794 grams of hydrogen, you also have 1 mol of hydrogen.

Usually density, in terms of mass and volume is taken such that p = m/V, so take the number of moles, find the molar mass and multiply them together to get your given mass in grams

Example.

I have 3 mols of H2O and the molar mass of water is 2*H + 1*O = approximately 18g/mol. now with 3 mols of H2O I have 54g of water. so then take that mass and divide it by the given volume of water you have obtained, which is helpful in the case of water as it weight and volume are almost 1:1 ie 54g H2O = 54mL or cubic centimeters.

So finally we know that the given density of water is only 54g/54cm^3 = 1gcm^-3

also know as 1000kg/m^-3. So don't mess with a tsunami, because only a cubic meter of water is a tonne, and that's a lot of cubic meters coming towards you at around 200kmph or 120mph if you live in the US.

Hope this helps.

Cheers.

Answer 4

Looks like someone is a bit lazy doing his/her homework...

anyway:

Molarity is the number of moles present in a volume of 1 litre. (Moles/L)

Molality is the number of moles present in 1 kg of solution. (Moles/Kg)

Density, is mass per volume. (should be in Kg/L)

First think intuitively. MolaRity = molaLity when 1 L is the same amount of matter than 1 Kg. That's when the density of the solution is 1 Kg/L.

If the solution is more dense, then the same volume holds more mass, so MolaRity > molaLity. This relation is proportional to the density, so... you can work out the formula.

Another way of looking at the problem is doing dimensional analysis (some call it cheating... it's that great!):

You need Moles/L and you have two magnitudes expressed in Moles/Kg and Kg/L. The only way you can cancel out those Kg is by simply multiplying them:

Moles/Kg x Kg/L = Moles/L

Molality x density = Molarity

Voila! problem solved

Answer 5

Mass: How much 'stuff' an object is made of.

Weight: The gravitational force between the object and another object, (normally the earth).

Volume: The amount of space an object fills.

Answer 6

Molarity is moles/liter. From moles/liter, you can calculate mass in grams by converting the moles to grams using molar mass, and then use the volume to calculate the final mass in that volume. Thus,
moles/liter x gram/mole x liters = mass in grams

Answer 7

1. You need to know the molar mass of the solute.
2. Calculate the amount of the solute for 1 L: molarity x molar mass
3. Calculate the amount of the solute for other volume:
b(g) = V(L) x a(g) where:
- b(g) is the amount of a solute in a given volume
- a(g) is the amount of a solute in 1 L
- V(L) is the known volume

Answer 8

please give me how to calculate the volume from molar ratio and give example

Answer 9

Multiply the density of the gas by 22.4L

1 mole of any gas at Standard Temperature and Pressure (STP) is 22.4L