An electrical substation circuit breaker uses sulfur hexafluoride gas as an insulator. During a routine maintenance check, a technician recovers 85.5 g of sulfur hexafluoride gas from the equipment.
Calculate the number of moles of sulfur hexafluoride recovered.
Give your answer to three significant figures. (relative formula mass: sulfur hexafluoride = 146)
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.