in the following reaction oxygen is the excess reactant. calculate the percentage yield for SiO2 for trial 1. explain what ratio of reactants is more efficient for the given reaction

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car