1. Silver sulfide (Ag, S) is the common tarnish on silver objects. The reaction if the
formation of silver sulfide is given below:
4AG (s) + 2H2S (9) + O2(g) - 2Ag, S (s) + 2H20 (1)
a. What mass of Ag, can be made from 11.2 L of HS gas at STP? (124)
b. How many grams of Ag are needed to react with 11.2 L of H, S? (108 g)
help me pls. and show work and explain

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

the answers are

c and c