a = 3 cm.
V = a*a*a
V = 3 * 3 * 3 = 9
n = 0.009 : 24.4 = 0.00004375
Mr(O) = 16
M(O2) = 32
m (O2) = 0.00004375 * 32 = 0.0014 г.
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a = 3 cm.
V = a*a*a
V = 3 * 3 * 3 = 9
n = 0.009 : 24.4 = 0.00004375
Mr(O) = 16
M(O2) = 32
m (O2) = 0.00004375 * 32 = 0.0014 г.