A technician is preparing a polymer sample in a laboratory. They start with a beaker containing 24.20 g24.20\text{ g}24.20 g of a polyurethane resin. Next, they add 4.75 g4.75\text{ g}4.75 g of a liquid hardener. Finally, they add 12 drops of an accelerator solution, where each drop has a mass of 0.085 g0.085\text{ g}0.085 g.
Assuming no material is lost to the surroundings, calculate the total mass of the mixture at the end of this preparation.
230 exam-style questions on Edexcel GCSE Chemistry 1.1 Formulae, equations and hazards, covering 1.1.1 Formulae, word and balanced equations, 1.1.2 Balanced ionic equations, and 1.1.3 Hazard symbols and risk in practical work. Each one has a worked solution and a mark scheme showing where the marks go.