If a reaction equation is balanced, then select all that apply. it will follow the law of conservation of mass there will be coefficients written in front of the formulas the mass of products will be equal to the mass of the reactants the mass of the products will be greater than the mass of the reactants

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost