i dint have much time please answer quick. What is the percent yield of H2 if the actual yield is 0.78 grams?

Can you me with this i really appreciate it

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.

Which statement would indicate the presence of an acid