Under normal conditions, the concentration of ideal gas molecules is 2.7 * 10 ^ 23 m-3. How many molecules

Under normal conditions, the concentration of ideal gas molecules is 2.7 * 10 ^ 23 m-3. How many molecules are in a closed vessel with a volume of 0.5 m3?

decision
N = nV = 2.7 * 10 ^ 23 * 0.5 = 1.35 * 10 ^ 23

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