A sample of 10.5 g of nitrogen reacts with 20.2 g of hydrogen to produce ammonia. 1) What is the theoretical yield of ammonia?
2) What is the limiting reactant?
3) What is the excess reactant?
4) How much excess reactant remains?
5) If 4.1 g of ammonia is actually produced, what is the percent yield?

Calcium hydride (cah2) reacts with water to form hydrogen gas: cah2(s) + 2h2o(l) → ca(oh)2(aq) + 2h2(g) how many grams of cah2 are needed to generate 45.0 l of h2 gas at a pressure of 0.995 atm and a temperature of 32 °c?

Which of the following warnings would an agricultural chemist tell a farmer who wants to recycle his or her own ammonia? recycling ammonia is a difficult process that sometimes takes weeks. recycling ammonia requires a degree in biochemistry or a related field. recycling ammonia can be harmful because it is highly flammable and toxic. recycling ammonia costs too much money considering the price of the necessary chemicals.

Reactions in cells take place at about a. 40°c b. 0° c. 100°c d. 60°c