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nadya68 [22]
3 years ago
8

Air is made of seperate molecules of Oxygen, Nitrogen, and Carbon Dioxide. Is the air a pure substance or a mixture? Explain.

Chemistry
1 answer:
Ivan3 years ago
5 0

Air must be a mixture because it consists of at least three separate substances.

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Determine % yield if a student obtains 45 g of product in an experiment and the theoretical amount is determined to be 50 g. *
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Answer:

90%

Explanation:

Percentage yield = ?

Theoretical yield = 50g

Actual yield = 45g

To calculate the percentage yield of a compound, we'll have to use the formula of percentage yield which is the ratio between the actual yield to theoretical multiplied by 100

Percentage yield = (actual yield / theoretical yield) × 100

Percentage yield = (45 / 50) × 100

Percentage yield = 0.9 × 100

Percentage yield = 90%

The percentage yield of the substance is 90%

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