Determine the molar mass of the substance if the mass of the molecule is m0 = 2.7 * 10 ^ -26

univerkov | February 3, 2021 | education

Given: m0 (the mass of one molecule of the substance in question) = 2.7 * 10 ^ -26 kg; N (number of molecules) = 1 molecule.

Constants: Na (Avogadro’s number) = 6.02 * 10 ^ 23 mol-1.

To determine the molar mass of the substance in question, we use the equality: N / Na = m0 / M, whence M = m0 * Na / N.

Let’s make a calculation: M = 2.7 * 10 ^ -26 * 6.02 * 10 ^ 23/1 = 0.016254 kg / mol or 16.254 g / mol.

Answer: The substance in question has a molar mass of 16.254 g / mol.

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