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

2 Answers
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=6.022xx10^23*mol^-1. This has the property that N_A ""^12C atoms have a mass of 12.00*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=????????

"Mass of molecules is unknown..........."

Feb 5, 2017

Multiply by the molar mass (or molecular weight).

Explanation:

For example, if you consider methane CH_4 the molecular weight is 16 g/mol. So 0.032 moles equates to 0.032 x 16 = 0.512 g