Question

The atomic mass of carbon is 12.01, sodium is 22.99, and oxygen is 16.00. what is the molar mass of sodium oxalate (na2c2o4? 134.00g 133.00 g 50.91 g 66.91 g 121.81 g

Answer 1

A(Na)=22.99
A(C)=12.01
A(O)=16.00

M(Na₂C₂O₄)=2A(Na)+2A(C)+4A(O)=2{A(Na)+A(C)+2A(O)}

M(Na₂C₂O₄)=2{22.99+12.01+2·16.00}=134 g/mole

Answer 2

it should be 134 g/mole. hope this helps