Chapter 4, Problem 43E

Write the balanced equation, then outline the steps necessary to determine the information requested in each of the following:

(a) The number of moles and the mass of Mg required to react with 5.00 g of HCl and produce ${\text{MgCl}}_{\text{2}}$ and ${\text{H}}_{\text{2}}$.

(b) The number of moles and the mass of oxygen formed by the decomposition of 1.252 g of silver(I) oxide.

(c) The number of moles and the mass of magnesium carbonate, ${\text{MgCO}}_{\text{3}}$, required to produce 283 g of carbon dioxide. (MgO is the other product.)

(d) The number of moles and the mass of water formed by the combustion of 20.0 kg of acetylene, ${\text{C}}_{\text{2}}{\text{H}}_{\text{2}}$, in an excess of oxygen.

(e) The number of moles and the mass of barium peroxide, ${\text{BaO}}_{\text{2}}$, needed to produce 2.500 kg of barium oxide, BaO ( ${\text{O}}_{\text{2}}$ is the other product.)

(f) The number of moles and the mass of required to react with ${\text{H}}_{\text{2}}\text{O}$ to produce 9.55 g of

43. Determine the number of moles and the mass requested for each reaction in Exercise 4.42.