In an industrial sulfuric acid plant, 1350 tonnes1350 \text{ tonnes}1350 tonnes of sulfur dioxide is fed into a catalytic converter.
During the reaction, only 98.1% of the sulfur dioxide molecules react to form sulfur trioxide.
Calculate the mass of sulfur dioxide that has not reacted.
Give your answer to two significant figures.
258 exam-style questions on Edexcel GCSE Chemistry Calculations involving masses. Each one has a worked solution and a mark scheme showing where the marks go.