What is the mass of 10 ^ 22 nitrogen molecules?

univerkov | September 7, 2021 | education

To determine the value of the mass of the taken nitrogen molecules, we use the equality: N / Na = m / MN, from where we express: m = N * MN / Na.

Constants and variables: N – the number of taken nitrogen molecules (N = 10 ^ 22 molecules); MN is the molar mass of nitrogen (MN = 0.028 kg / mol); Na – Avogadro’s number (Na = 6.02 * 10 ^ 23 mol-1).

Calculation: m = N * MN / Na = 10 ^ 22 * 0.028 / (6.02 * 10 ^ 23) = 4.65 * 10 ^ -4 kg = 0.465 g.

Answer: The mass of taken nitrogen molecules is equal to 0.465 g.

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