N = Na * v
v = m / M
M(H2s) = 2 + 32 = 34 * 10^-3
v = 5 * 10^-3 / 34 * 10^-3 = 0.15 моль
N = 6.02 * 10^23 * 0.15 = 9.03 * 10^24 молекул
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N = Na * v
v = m / M
M(H2s) = 2 + 32 = 34 * 10^-3
v = 5 * 10^-3 / 34 * 10^-3 = 0.15 моль
N = 6.02 * 10^23 * 0.15 = 9.03 * 10^24 молекул