Ответ:
дано
m(Na) = 9.2 g
--------------------
V(H2)-?
2Na+2HCL-->2NaCl+H2
M(Na) = 23 g/mol
n(Na) = m/M = 9.2 / 23 = 0.4 mol
2n(Na) = n(H2)
n(H2) = 0.4 / 2 = 0.2 mol
V(H2) = n(H2) * Vm = 0.2 * 22.4 = 4.48 L
ответ 4.48 л
Объяснение:
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Answers & Comments
Ответ:
дано
m(Na) = 9.2 g
--------------------
V(H2)-?
2Na+2HCL-->2NaCl+H2
M(Na) = 23 g/mol
n(Na) = m/M = 9.2 / 23 = 0.4 mol
2n(Na) = n(H2)
n(H2) = 0.4 / 2 = 0.2 mol
V(H2) = n(H2) * Vm = 0.2 * 22.4 = 4.48 L
ответ 4.48 л
Объяснение: