Some people are concerned that saccharin, C7H5NO3S\text{C}_7\text{H}_5\text{NO}_3\text{S}C7H5NO3S, which is used as an artificial sweetener, may have adverse health effects. Research shows that the safe maximum daily intake of saccharin is 3.0×10−5 mol kg−13.0 \times 10^{-5}\text{ mol kg}^{-1}3.0×10−5 mol kg−1. A typical adult has a mass of 70 kg70\text{ kg}70 kg. A can of a diet drink contains 55 mg55\text{ mg}55 mg of saccharin. How many cans of this diet drink is it safe for a typical adult to drink in one day?
199 exam-style questions on OCR A A Level Chemistry Atoms and reactions, covering Atomic structure and isotopes, Compounds, formulae and equations, Amount of substance, Acids, and Redox. Each one has a worked solution and a mark scheme showing where the marks go.