In a displacement reaction, 0.082 mol of silver nitrate, AgNO3\text{AgNO}_3AgNO3, is reacted with copper according to the equation:
Cu+2AgNO3→Cu(NO3)2+2Ag \text{Cu} + 2\text{AgNO}_3 \rightarrow \text{Cu(NO}_3)_2 + 2\text{Ag} Cu+2AgNO3→Cu(NO3)2+2AgCalculate, to one decimal place, the minimum mass of copper, Cu\text{Cu}Cu, that must be added to react completely with all the silver nitrate.
(relative atomic mass: Cu=63.5\text{Cu} = 63.5Cu=63.5)
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.