What is the theoretical yield of the reaction of aluminum oxide when 15.0 g of aluminum reacts with excess oxygen? 4A1 (s) + 302(g)—>2Al2O3(s)

A. 56.7 g Al2O3
B. 15.0 g A1203
C. 28.3 g Al2O3
D. 7.50 g Al2O3

The equation below shows the reaction of zinc with hydrochloric acid (hcl). zn (s) + 2 hcl (aq) —> zncl2 (aq) + h2 (g) what will happen if the concentration of hcl is decreased? a. more zncl2 will be produced. b. the reaction rate will slow down. c. the hydrochloric acid will become more acidic. d. the reaction will produce water instead of hydrogen gas.