Importance of hematology​

If 200.0g of copper(ll) sulfate react with an excess of zinc metal, what is the theoretical yield of copper

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.