Question

0.27g of aluminium reacts with2.4 bromine. How many moles of aluminium are there in 0.27 of aluminium?

Answer 1

Moles = mass / molar mass = 0.27 g / 26.98 g·mol⁻¹ ≈ 0.0100 mol.

(Using 27.0 g·mol⁻¹ gives 0.27/27 = 0.0100 ≈ 1.0 × 10⁻² mol.)