What is the mass of 1.81 x 10^23 molecules of nitrogen, N2?
Calculating the Mass of Nitrogen, Nâ
From Avogadro's hypothesis:
6.02Ã10²³ molecules = 1 mole of nitrogen, Nâ
1 mole of nitrogen, Nâ = 28.02 g
Therefore,
6.02Ã10²³ molecules = 28.02 g of nitrogen, Nâ
Given that we need to find the mass of nitrogen, Nâ that contains 1.81Ã10²³ molecules:
1.81Ã10²³ molecules = (1.81Ã10²³ à 28.02) / 6.02Ã10²³
1.81Ã10²³ molecules = 8.42 g of nitrogen, Nâ
Thus, the mass of nitrogen, Nâ containing 1.81Ã10²³ molecules is 8.42 g.
By using Avogadro's hypothesis and the molar mass of nitrogen, we can determine the mass of nitrogen molecules accurately.