Question

A student wants to conduct the following experiment: 2C4H10+13O2 8CO2+10H2O

If she wanted to use all 13 moles of oxygen gas (O2) in this reaction, how many grams would she need?

A. 104
B. 208
C. 416
D. 624

Answer 1

Answer: 416 g O₂

Step-by-step explanation:

2 C₄H₁₀ + 13 O₂ --> 8 CO₂ + 10 H₂O

Step 1: Make sure the equation is balanced, and it is balanced.

Step 2: Determine the molar mass of O₂.

Molar mass of O₂ = 32.00 g/mol

Step 3: Start with 13 moles O₂ and use the molar mass of O₂ to find grams of O₂.

13 mol O₂ x (32.00 g O₂/1 mol O₂) = 416 g O₂

Note that the mol O₂ cancel and you are left with g O₂.