1. Higher Only

After testing the soil samples, the farmer finds that the soil in one of his fields is acidic.

Acidic soil can be neutralised by spreading magnesium carbonate, MgCO₃, onto the soil.

The farmer uses 25.0 kg of magnesium carbonate.

Calculate the number of moles of magnesium carbonate the farmer uses.

(A_r: C = 12.0; Mg = 24.3; O = 16.0)

Give your answer to 3 significant figures.

Number of moles of magnesium carbonate = ..........................................................