3. Chemical Reactions

Given the reaction: 2Al2O3 → 4Al + 3O2, how many moles of Al would be produced from 20 moles of Al2O3?

In the combustion of carbon, according to the reaction C + O_2 → CO_2, how many moles of oxygen gas (O_2) are required to produce 7.00 moles of carbon dioxide (CO_2)?

When 0.0500 mol of Au_2S_3 is reduced completely with excess H_2, what mass of Au is produced?

If the coefficient 8 is placed in front of Ag2S in a chemical equation, how many sulfur atoms are represented by 8Ag2S?

How many grams of aluminum (Al) must react with excess sulfuric acid (H_2SO_4) to produce 2.6 L of hydrogen gas (H_2) at STP?

Hydrogen gas can be formed by the reaction of methane with water according to the equation: CH4(g) + H2O(g) ⇌ CO(g) + 3H2(g). In a particular reaction, 25.5 L of methane gas (measured at a pressure of 730 torr and a temperature of 298 K) is used. How many liters of hydrogen gas are produced at the same conditions?

How many millilitres of 0.200 M NaOH are required to completely neutralize 20.0 mL of 0.100 M HCl?

Given the reaction 2 NO + O_2 → 2 NO_2, what mass of O_2 (in grams) is required to produce 75.0 grams of NO_2?

A reaction between calcium fluoride and sulfuric acid produces fluorine gas. If the second sample of calcium fluoride used was 5.00 g, how many grams of fluorine (F_2) are produced, assuming the reaction goes to completion and all calcium fluoride is converted?

When 10.0 g of NH_3 reacts completely with excess O_2 according to the equation 4 NH_3 + 5 O_2 → 4 NO + 6 H_2O, how many grams of H_2O are produced?

Titanium tetrachloride (TiCl_4) has a molar enthalpy of fusion (ΔH_{fus}) of 9.37 kJ/mol. How much energy is required to melt 261.1 g of TiCl_4?

In the reaction 2Al + 3Cl_2 → 2AlCl_3, if 4.0 moles of Al are mixed with 6.0 moles of Cl_2, how many moles of the excess reactant remain after the completion of the reaction?

2. Which of the following is the correct method to convert between moles of one substance and moles of another substance in a chemical reaction?

A chemical reaction has the following balanced equation: 2 H_2 + O_2 ightarrow 2 H_2O. If you start with 4 grams of H_2, how many grams of H_2O can be produced, assuming excess O_2?

How many grams of Ca(OH)_2 are required to prepare 100 mL of a 0.250 M solution?