Calculate the total number of atoms in 15.0 g of glycine, C2H5NO2\text{C}_2\text{H}_5\text{NO}_2C2H5NO2.
(relative formula mass: C2H5NO2=75\text{C}_2\text{H}_5\text{NO}_2 = 75C2H5NO2=75; Avogadro constant = 6.02 × 1023)
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.