The co-efficients in balanced equations represent the number of moles reacting and being produced, it is rare that this exact ratio will be used in a reaction. For example, some reactants can be ...

The solid copper hydroxide precipitate was collected by filtering, washed with water and dried in an oven. It was found to weigh 1.95g and from this we can calculate the mass of copper sulfate in ...

The second step calculated the amount of reactant by considering the mole ratio between product and reactant. It could take students a long time to understand these two steps before answering the ...