# How do you calculate the number of grams in 0.032000 moles?

Feb 5, 2017

You can calculate the number of molecules.............

#### Explanation:

You cannot calculate the mass of the molecules on the basis of the given information.

The mole is simple a number, i.e. ${N}_{A} = 6.022 \times {10}^{23} \cdot m o {l}^{-} 1$. This has the property that ${N}_{A}$ ""^12C atoms have a mass of $12.00 \cdot g$ precisely. The mole is thus the link between the sub-micro world of atoms and molecules, with the macro world of grams and kilograms and litres and cubic metres. Capisce?

"Number of molecules"=6.022xx10^23*mol^-1xx0.032000*mol=????????

$\text{Mass of molecules is unknown...........}$

Feb 5, 2017

Multiply by the molar mass (or molecular weight).

#### Explanation:

For example, if you consider methane $C {H}_{4}$ the molecular weight is 16 g/mol. So 0.032 moles equates to 0.032 x 16 = 0.512 g