Exhibit 3-1 Consider the unbalanced reaction below to answer the following question(s) :
CO (g) + O₂ (g) →CO₂ (g)
-Refer to Exhibit 3-1. How many grams of O₂ are required to react completely witH₂ 5.0 grams of CO?

Question

Quizplus · Accepted Answer

1. Write the balanced chemical equation. CO (g) + O₂ (g)→CO₂ (g) 2. Calculate the molar mass of CO and O₂ Molar mass CO = 12.01 g/mol + 15.99 g/mol = 28 g/mol Molar mass O₂ = 16 g/mol + 32.06 g/mol = 48.06 g/mol 3. Calculate the number of moles of CO. mol CO = mass/molar mass = 5.0 g/28 g/mol = 0.1786 mol 4. Determine the stoichiometry of the reaction. 1 mol CO:1 mol O₂ 0.1786 mol CO:x mol O₂ = x = 0.1786 mol O₂ 5. Calculate the mass of O₂ using the number of moles and molar mass. mass O₂ = number of moles × molar mass = 0.1786 mol × 48.06 g/mol = 8.57 g Therefore, the answer is C, 14.3 g O₂.

Exhibit 3-1 Consider the Unbalanced Reaction Below to Answer the Following