Calculate the mass of 3.011 × 10 23 atoms of nitrogen.

Question

Philoid · Accepted Answer

First we will convert 3.011 × 10²³ number of nitrogen atoms into number of moles:

We know, 1 mole = 6.022 × 10²³(N_a = Avogadro’s number)

Number of moles = 0.5

Now, to calculate mass, apply the formula:

We can write:

Mass(m) = Number of moles (n) × Molar mass of nitrogen (M)

Mass = 0.5 mol × 14g/mol

Mass = 7g

Thus, the mass of 3.011 × 10²³ atoms of nitrogen is 7g