Question

2- Calcule a massa molecular de: a) Sacarose (C12H22O11) b) Nitrato de cálcio Ca(NO3)2

Answer 1

Sacarose

C = 12 x 12 = 144
H = 22 x 1 = 22
O = 11 x 16 = 176

Massa Molecular = 176 + 22 + 144 = 342g/mol


Nitrato de cálcio
Ca = 1 x 40 = 40
N = 2 x 14 = 28
O = (3 x 16)x2 = 96

Massa Molecular = 40+28+96 = 164g/mol