I know how to solve chemical equations, but I think it is soooo much harder to figure out how to do a problem like this Directions: Write and balance the following chemical reactions. Copper(II) sulfide reacts with nitric acid to produce copper(II) sulfate, water, and nitrogen dioxide.

2) Sulfuric acid reacts with copper to produce cupric sulfate and hydrogen gas. If you hae a solution of sulfuric acid that is 40 percent hydrogen sulfate by weight , how many grams of copper do you need to react with 20 grams of sulfuric acid?

Could anyone help me with the following two problems? 1) If you react ammonium sulfate with calcium nitrate, what are the products? Is it SO(NO3)2 + Ca(NH4)2 or CaSO4 + 2(NH4)NO3 How do you know which are going to combine? I'm confused

Can someone help me with this following chem problem? A compound containing only xenon and fluorine can be obtained by shining light on a flask that contain .526 g of xenon and excess fluorine gas. When all the xenon was consumed, 678 of the new compound was obtained. Determine the empirical...