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pav-90 [236]
3 years ago
13

Calculate the pH of a solution that has [H3O+]=4.3 x 10^-5 M

Chemistry
1 answer:
Neko [114]3 years ago
6 0

Answer:

pH = 4.4

Explanation:

pH = -log[H₃O⁺]

     = -log(4.3 × 10⁻⁵)

pH = 4.37 = 4.4

I'm actually learning this in my chemistry class right now lol. Hope this helps though. :)

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If you obtain 3.0 grams of aspirin from an experiment that could make no more than 3.14 grams, what is the percent yield?
Masteriza [31]

Answer:

96%

Explanation:

To find the percent yield, we can use this equation

\frac{Actual}{Theoretical} *100

The actual yield of aspirin is 3.0 and the theoretical is 3.14 in this case, so just plug the numbers in.

\frac{3.0}{3.14} *100\\\\ =96

Thus the percent yield is 96%

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3 0
2 years ago
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Vedmedyk [2.9K]

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Explanation:

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Hello there.
<span>
Some elementary particles are positively or negatively 
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