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I need help with this plz help me

I need help with this plz help me-example-1

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Answer:

B. 3. 0×10^-4M

Step-by-step explanation:

Ph=3. 6

H3O+=H+

PH =-log[H+]

3. 6=-log[H+]

[H+]=3.0x10^-4M

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