chemistry calculations

Question

what’s the amount of CO2 produced when 93 g of H2CO3 decomposes completely

Answer 1

To answer this, we must first write the correctly balanced equation for the reaction:

H₂CO₃ ==> CO₂ + H₂O ... balanced equation

Next we find the moles of H2CO3 that decompose and then find moles of CO₂ and finally grams of CO₂...

moles H₂CO₃ = 93 g x 1 mol H₂CO₃ / 62 g = 1.5 moles H₂CO₃

moles CO₂ produced = 1.5 moles H₂CO₃ x 1 mol CO₂ / mol H₂CO₃ = 1.5 moles CO₂

grams CO₂ = 1.5 moles CO₂ x 44 g CO₂ / mol = 66 g CO₂