Which elements/compounds are in the solid state in the reaction below? Select all that apply. Zn(s)(s) + CuSO4(aq)4(aq) →→ ZnSO4(aq)4(aq) + Cu(s)

Acertain drug is made from only two ingredients: compound a and compound b. there are 3 millimeters of compound a used for every 4 millimeters of compound b. if a chemist wants to make 693 milliliters of the drug, how many milliliters of compound a are needed?