Problem 56
Iron(III) oxide reacts with carbon to give iron and carbon monoxide. $$ \mathrm{Fe}_{2} \mathrm{O}_{3}(s)+3 \mathrm{C}(s) \longrightarrow 2 \mathrm{Fe}(s)+3 \mathrm{CO}(g) $$ a. How many grams of \(\mathrm{C}\) are required to react with \(16.5 \mathrm{~g}\) of \(\mathrm{Fe}_{2} \mathrm{O}_{3}\) ? b. How many grams of \(\mathrm{CO}\) are produced when \(36.0 \mathrm{~g}\) of C reacts? c. How many grams of Fe can be produced when \(6.00 \mathrm{~g}\) of \(\mathrm{Fe}_{2} \mathrm{O}_{3}\) reacts?
Problem 58
Calcium cyanamide reacts with water to form calcium carbonate and ammonia. $$ \mathrm{CaCN}_{2}(s)+3 \mathrm{H}_{2} \mathrm{O}(I) \longrightarrow \mathrm{CaCO}_{3}(s)+2 \mathrm{NH}_{3}(g) $$ a. How many grams of water are needed to react with \(75.0 \mathrm{~g}\) of \(\mathrm{CaCN}_{2}\) ? b. How many grams of \(\mathrm{NH}_{3}\) are produced from \(5.24 \mathrm{~g}\) of \(\mathrm{CaCN}_{2} ?\) c. How many grams of \(\mathrm{CaCO}_{3}\) form if \(155 \mathrm{~g}\) of water reacts?
Problem 59
When lead(II) sulfide ore burns in oxygen, the products are solid lead(II) oxide and sulfur dioxide gas. a. Write the balanced equation for the reaction. b. How many grams of oxygen are required to react with \(0.125\) mole of lead(II) sulfide? c. How many grams of sulfur dioxide can be produced when \(65.0 \mathrm{~g}\) of lead(II) sulfide reacts? d. How many grams of lead(II) sulfide are used to produce \(128 \mathrm{~g}\) of lead(II) oxide?
Problem 60
When the gases dihydrogen sulfide and oxygen react, they form the gases sulfur dioxide and water vapor. a. Write the balanced equation for the reaction. b. How many grams of oxygen are needed to react with \(2.50 \mathrm{~g}\) of dihydrogen sulfide? c. How many grams of sulfur dioxide can be produced when \(38.5 \mathrm{~g}\) of oxygen reacts? d. How many grams of oxygen are needed to produce \(55.8 \mathrm{~g}\) of water vapor?
