Question

Can someone show me how to do this?

Answer 1

To start off any questions, we write down the givens.

Mass CO2 = 168.2g
Molar Mass CO2 = 44.011g/mol
Moles CO2 = ?

To find the number of moles, we do mass/molar mass to find the # moles

n CO2 = 44.011g / 168.2 g/mol
n CO2 = 0.26165874 mol
n CO2 = 0.2617 mol

The number of moles in the sample is 0.2617 mol.