12. the combustion of propane (c3h8) occurs accor
pane (c3h8) occurs according to the following chemical equation:
c3h3 (g) + 502 (g) → 3c02 (g) + 4h20 (g)
if 901 moles of c3hg are burned, how many moles of co2 are formed?

2703 moles

We are given;

C₃H₈(g) + 5O₂ (g) → 3CO₂ (g) + 4H₂O (g)

We are required to calculate the number of moles of CO₂ formed.

Thus; moles of CO₂ = Moles of C₃H₈ × 3

                                 = 901 moles × 3

                                 = 2703 moles

Thus, moles of CO₂ formed will be 2703 moles

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.