A chemist requires 0.269 mol Na2CO3 for a reaction. How many grams does this correspond to?

Question

A chemist requires 0.269 mol Na2CO3 for a reaction. How many grams does this correspond to?

Answer 1

Hello, Joana,

moles and grams are related through the molr mass of the compound, in units of g/mole. Find the molar mass of Na₂CO₃ by adding the atomic masses of each element in the compound. There are 2 sodiums, at 23 amu each, 1 caron for 12, and 3 O's for 48. That adds to 106 amu, or wecan also say grams/mole.

Convert 0.269mole to grams by multiplying it times it's molar mass:

(0.269 mole)(106g/mole)=28.5 grams

Bob