For each of the following precipitation reactants, calculate how many grams of the first reactant are necessary to completely react with 18.0 gram of the second reactant. K2SO4(aq)+Sr(NO3)2(aq)--->>Sr SO4(s)+2KNO3(aq)​

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

Which sample at stp has the same number of atoms as 18 liters of ne at stp

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.