Question

5ª) Calcule a massa molecular de:

a) 1mol da Trimetilamina, cuja a formula é: C3H9N (C=12, H=1 e N=14);

b) 1mol de Cloroetano, cuja a fórmula é: C2H5Cl (C=12, H=1, Cl=35).​

Answer 1

$C_3H_9N\\\\M_M = (12 \cdot 3) + (9 \cdot 1 ) + 14\\M_M = 36 + 9 + 14\\M_M = 59u\\\\C_2H_5Cl\\\\M_M = (12 \cdot 2) + (5 \cdot 1) + 35\\M_M = 23 + 5 + 35\\M_M = 63u$