Propane burns completely according to \(\mathrm{C_3H_8+5O_2\rightarrow3CO_2+4H_2O}\). What mass of carbon dioxide forms from \(11.0\text{ g}\) propane with excess oxygen? \(A_r: C=12,H=1,O=16\)
| Reasoning stage | What to do |
|---|
| Identify | Extract the particles, substances, observations, quantities and conditions stated in the stem. |
| Apply | Use mole-ratio reacting mass to compare the five alternatives. |
| Verify | Check the balanced equation, mole ratio, limiting reagent, units and significant figures. |
Select one option.