Question

Calcule as massas molares para as moléculas

presiso urgente​ agoraaaa​

Answer 1

Resposta:

Explicação:

a)

H2SO4

H2 = 2 . 1 = 2

O4 = 4 . 16 = 64

S1 = 1 . 32,065 = 32,065

Massa molar H2SO4 =  2 + 64 + 32,065 = 98,065 g/mol

b)

MgCl2

Mg1 = 1 .  24,305 = 24,305

Cl2 = 2 . 35,453 =70,906

Massa molar MgCl2 = 24,305 + 70,906 = 95,211 g/mol

c)

KClO3

k1 = 1 . 39,0983 = 39,0983

Cl1 = 1 . 35,453 = 35,453

O3 = 3 . 16 = 48

Massa molar KClO3 = 39,0983 + 35,453 + 48 = 122,55 g/mol

d)

H4P2O7

H4 = 1 . 4 = 4

P2 = 2 . 30,973762 = 61,9475524

O7 = 7 . 16 = 112

Massa molar H4P2O7 = 4 + 61,947524 + 112 = 177,98