Xx grams of water were added to 80 grams of a strong solution of acid. if as a result, the concentration of acid in the solution became 1/y times of the initial concentration, what was the concentration of acid in the original solution?
1. xx=80
2. yy=2

Which of the following is a compound? a.carbon b.oxygen c.hydrogen d.water

An excess of lithium oxide undergoes a synthesis reaction with water to produce lithium hydroxide li2o+h2o→2lioh if 1.05 g of water reacted, what is the theoretical yield of lithium hydroxide? a) 5.83 x 10–2 g lioh b) 1.17 x 10–1 g lioh c) 2.79 x 100 g lioh d) 1.40 x 100 g lioh

Enzymes affect the reactions in living cells by changing the