Some consumers are concerned about the daily intake of the food preservative sodium benzoate, C7H5NaO2\text{C}_7\text{H}_5\text{NaO}_2C7H5NaO2, which is commonly used to inhibit microbial growth in acidic foods. Research indicates that the safe maximum daily intake of sodium benzoate is 4.5×10−5 mol kg−14.5 \times 10^{-5}\text{ mol kg}^{-1}4.5×10−5 mol kg−1.
A typical adult has a body mass of 80 kg80\text{ kg}80 kg. A single bottle of a salad dressing is found to contain 86.4 mg86.4\text{ mg}86.4 mg of sodium benzoate.
Determine the maximum number of bottles of this salad dressing that a typical adult can safely consume 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.