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3 years ago

How to determine the relative rates of reactant disappearance and product appearance using reaction stoichiometry

Chemistry

1 answer:

Lady_Fox [76]3 years ago

6 0

Answer:

For example, the relative rate of a reaction at 20 seconds will be 1/20 or 0.05 s -1, while the average rate of reaction over the first 20 seconds will be the change in mass over that period, divided by the change in time.

Explanation:

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Calculate the mass in mg of the aspirin tablet that contains 5.0 grains of aspirin . Assume 1 pound contains 7000 grains.

Rzqust [24]

Answer:

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Explanation:

We need to find the mass of the aspirin tablet that contains 5.0 grains of aspirin.

1 pound = 7000 grains

$1\ \text{grain}=\dfrac{1}{7000}\ \text{pounds}$

$5\ \text{grain}=\dfrac{1}{7000}\times 5\ \text{pounds}\\\\=\dfrac{1}{1400}\ \text{pounds}$

We know that, 1 pound = 453.592 grams

Also, 1 pound = 453592 mg

$\dfrac{1}{1400}\ \text{pounds}=\dfrac{1}{1400}\times 453592\ mg\\\\=323.99\ \text{mg}$

Hence, 4 grains of aspirin contains 323.99 mg.

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