Prof. Willis Jerde MD
Nov 13, 2024
How many grams of CO2 are used when 8.5g of O2 are produced?
How many grams of CO2 are produced when 8.5 g of O2 are generated?
Here’s the balanced equation for the reaction: 4 KO2 + 2 CO2 → 2 K2CO3 + 3 O2.
I would appreciate it if you could show the steps taken to arrive at the answer. Thank you!
1 Answers
The equation tells you that 2 mol CO2 are used when 3 mol O2 are produced. You produce 8.5g O21 Molar mass O2 = 32g/mol mol O2 in 8.5g = 8.5/32 = 0.2656 mol O2 This will require 0.2656*2/3 = 0.1771 mol CO2 is used Molar mass CO2 = 44g/mol Mass of 0.1771 mol CO2 = 0.1771*44 = 7.792 g CO2 used
Answer correct to 2 significant figures = 7.8g CO2 used.
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