Question

Calcule a massa molecular de cada composto abaixo e demonstre o cálculo.

Dados: Ca= 40, Cl = 35,5, H= 1 P= 31, O= 16, K=39, S=32 Fe= 56.

a)CaCl2 =  
 

b) H2PO3= 


c)C12H22O11= 


d)K2SO4= 

​

Answer 1

Resposta:

a)CaCl2 = (1x40+2x35,5)= 111 g/mol

b) H2PO3= (2x1+1x31+3x16)= 81 g/mol

c)C12H22O11= (12x12+22x1+11x16)= 342 g/mol

d)K2SO4= (2x39+1x32+4x16)= 174 g/mol