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Nimfa-mama [501]
3 years ago
7

How many moles of O2 are required to generate 18 moles of H2O in the given reaction?

Chemistry
2 answers:
lbvjy [14]3 years ago
7 0

Answer:

e

Explanation:

sashaice [31]3 years ago
4 0

Answer:

25 mol

Explanation:

2C₈H₁₈ + 25O₂ ⟶ 16CO₂ + 18H₂O

The equation tells us that 25 mol O₂ generate 18 mol H₂O.


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A chemical reaction that is expected to form 325.0 gof product only forms 123.8 g of product. What is the percent yield of this
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Answer:

\boxed {\boxed {\sf A. \ 38.1 \%}}

Explanation:

Percent yield is the ratio of the amount actually produced to how much could theoretically be produced. It is found using this formula:

\% \ yield = \frac{actual \ yield}{theoretical \ yield} *100

For this reaction, the theoretical or expected yield is 325.0 grams. The actual yield is 123.8 grams.

\% \ yield = \frac{ 123.8 \ g }{325.0 \ g }*100

Divide.

\% \ yield = 0.380923077 *100

\% \ yield = 38.0923077

Round to the nearest hundredth. The 9 in the hundredth place tells us to round the 0 to a 1 .

\% \ yield \approx 38.1

The percent yield is about <u>38.1%</u>

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The term conservation of mass means that mass in any system can neither be created nor destroyed but can be transformed from one state to another.

<h3>What is the law of mass of conservation?</h3>

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This means that when an element is involved in a chemical reaction, it's mass remains the same at the end of that reaction.

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