Answer :
H₂:
M=2g/mol
m=10g
n = m/M = 10g/2g/mol = 5mol
O₂:
M = 32g/mol
m = 80g
n = m/M = 80g/32g/mol = 2,5mol
2H₂ + O₂ ⇒ 2H₂O
2mol : 1mol : 2mol
5mol : 2,5mol : 5mol
10g : 80g : 10g+80g=90g
B
M=2g/mol
m=10g
n = m/M = 10g/2g/mol = 5mol
O₂:
M = 32g/mol
m = 80g
n = m/M = 80g/32g/mol = 2,5mol
2H₂ + O₂ ⇒ 2H₂O
2mol : 1mol : 2mol
5mol : 2,5mol : 5mol
10g : 80g : 10g+80g=90g
B