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Ronch [10]
3 years ago
10

How to calculate the mass percent of hydrogen

Chemistry
1 answer:
Keith_Richards [23]3 years ago
8 0

Answer:

divide the mass of element in 1 mole of the compound by the compound's molar mass and multiply the answer by 100.

Explanation:

take the molar mass of hydrogen in the water molecule, divide by the total molar mass of water, and multiply by 100.

does it help?

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3 years ago
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3 years ago
Given a solution with a hydroxide ion concentration, oh=3.73×10^-5,what is the ph
Stells [14]

Answer:

  • <em><u>pH </u></em><u>= 9.73</u>

<u></u>

Explanation:

<em>pOH</em> is the negative logarithm of the molar <em>concentration</em> of<em> hydroxide ions </em>and pH is the negative logarithm of the concentration of hydronium ions.

The mathematical expression to determine pOH is:

         pOH=-\log [OH^-]

Where [OH⁻] means the molar concentration of hydroxide ions.

Substituting:

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From which:

           pH=14-pOH\\\\pH=14 - 4.43\\\\pH=9.57\leftarrow answer

8 0
4 years ago
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