An environmental chemist analyzes a brackish groundwater sample from a coastal aquifer. They evaporate a 125 cm3 sample of this groundwater to dryness, leaving behind a residue of 1.85 g of dissolved salts.
Calculate the concentration of total dissolved solids (TDS) in this groundwater sample in g dm−3\text{g~dm}^{-3}g dm−3.
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.