Question

calculate the molar mass of
Na2So3 , AI3O3 , C3H7OH

At. mass data:
Na-23
S-32
O-16
AI-27
C-12
H-1​

Answer 1

$Na_2SO_3 = 23×2 + 32 + 16×3 = 126\\\\Al_3O_3 = 27×3 + 16×3 = 129\\\\C_3H_7OH = 12×3 + 1×7 + 16 + 1 = 60$