youngcie04
14.04.2020 •
Chemistry
You are given two closed containers, each containing a liquid solvent.
Ammonia and table salt will dissolve in container A.
Hexane and carbon dioxide will dissolve in container B.
What can you conclude about the possible solvents in containers A and B?
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Ответ:
336.6 grams of CO₂ and 183.6 grams of H₂O are formed from 2.55 moles of propane.
Explanation:
In this case, the balanced reaction is:
C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O
By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of reactant and product participate in the reaction:
C₃H₈: 1 moleO₂: 5 molesCO₂: 3 molesH₂O: 4 molesBeing the molar mass of each compound:
C₃H₈: 44 g/moleO₂: 16 g/moleCO₂: 44 g/moleH₂O: 18 g/moleThen, by stoichiometry, the following quantities of mass participate in the reaction:
C₃H₈: 1 mole* 44 g/mole= 44 gramsO₂: 5 moles* 16 g/mole= 80 gramsCO₂: 3 moles* 44 g/mole= 132 gramsH₂O: 4 moles* 18 g/mole= 72 gramsSo you can apply the following rules of three:
If by stoichiometry 1 mole of C₃H₈ forms 132 grams of CO₂, 2.55 moles of C₃H₈ how much mass of CO₂ will it form?mass of CO₂= 336.6 grams
If by stoichiometry 1 mole of C₃H₈ forms 72 grams of H₂O, 2.55 moles of C₃H₈ how much mass of H₂O will it form?mass of H₂O= 183.6 grams
336.6 grams of CO₂ and 183.6 grams of H₂O are formed from 2.55 moles of propane.