Question

Calcule a massa molecular das sementes moléculas abaixo

A) H2O
B) h2CO3
C) KMnO4
C) h4P2O7

Answer 1

A) H2O
H= 1g/mol
O= 16g/mol

1×2=2
1×16=16

=2+16
=18 g/mol

B)H2CO3
H=1 g/mol
C=12 g/mol
O=16g/mol

1x2=2
1×12=12
3×16=48

2+12+48
=14+48
=62g/mol

C)KMnO4
K=39g/mol
Mn=55g/mol
O=16g/mol

1×39=39
1×54=55
16×4=64

39+55+64
=158g/mol

D)H4P2O7

H=1g/mol
P=31g/mol
O=16g/mol

1×4=4
2×31=62
7×16=112

4+60+112
178