I think the answer is c. two molecules
C. because silvers atomic number is 47 so you subtract 47 from 107 to get the number of neutrons
The hydrogenated vegetable oil serves as a preservative, thus, the correct option is D. Hydrogenated vegetable oil are used by food industries to prevent fat rancidity in order to give their product a longer shelf life. Hydrogenated oils are very good preservatives because all the enzymatic activities in the oil has been neutralized during the hydrogenating process.
Answer:
0.5472 moles of H₂O are produced
0.1992 moles of C₈H₁₈ were left
Explanation:
The reaction of octane (C₈H₁₈) with oxygen (O₂) is:
C₈H₁₈ + 25/2 O₂ → 8CO₂ + 9H₂O
<em>Where 1 mole of octane reacts with 25/2 moles of oxygen to produce 8 moles of carbon dioxide and 9 moles of water</em>
For a complete reaction of 0.760moles of oxygen there are needed:
0.760 mol O₂ ₓ (1 mole C₈H₁₈ / 25/2 moles O₂) = <em>0.0608 moles of C₈H₁₈</em>
As you have 0.260 moles, the moles of octane that were left are:
0.260 mol - 0.0608 mol = <em>0.1992 moles of C₈H₁₈</em>
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Now, if 0.760 moles of O₂ react, the moles of water that are produced are:
0.760 mol O₂ ₓ (9 moles H₂O / 25/2 moles O₂) = <em>0.5472 moles of H₂O</em>
2 phosphorus and 5 oxygen atoms
