Question

Calculate the mass of each of the following: 2 moles of methane

Answer 1

Given:

Number of moles = 2 

Atomic mass of CH₄ = 12+ 1 × 4 = 16g/mol 

To find out the mass of methane, apply the formula given:

Number of moles = \(\frac{Mass}{Molar\,mass}\)

⇒ 2 = \(\frac{Mass}{16\,g/mol}\)

⇒ Mass = 2 mol × 16g/mol 

⇒ Mass = 32g 

Thus, the mass of methane is 32g.