Resposta :
Resposta:
Massa molar O2 = 16x2 = 32 g/mol
1 mol O2 -------- 32g
x -------------- 5,6g
32x = 5,6
x = 5,6/32
x = 0,175 mol
1 mol ---- 22,4 L ~ cntp
0,175 mol --- z
z = 3,92 L
Resposta:
Massa molar O2 = 16x2 = 32 g/mol
1 mol O2 -------- 32g
x -------------- 5,6g
32x = 5,6
x = 5,6/32
x = 0,175 mol
1 mol ---- 22,4 L ~ cntp
0,175 mol --- z
z = 3,92 L