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What is the molar concentration of [H3O+] in a cola that has a pH of 3.120?

Question
What is the molar concentration of [H3O+] in a cola that has a pH of 3.120? 
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Step 1

pH is the inverse logarithm of the concentration of hydronium ions in solution.  It determines the acidity of solution. Likewise, its antilog will give the concentration of hydronium ions,

Step 2

The molar concentration of [H3O+] in a cola with a pH of...

но"
10-рH
[но]-10-3.120
[но]
-7.59 х 104 м
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но" 10-рH [но]-10-3.120 [но] -7.59 х 104 м

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