Find the number of nitric oxide (II) molecules if its volume is 67.2 liters.

Given:
V (NO) = 67.2 l
Find: N (NO)

Solution:
N = V * Na / Vm
N = 67.2 * 6 * 10 ^ 23 / 22.4 = 18 * 10 ^ 23

Answer: 18 * 10 ^ 23



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