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madreJ [45]
3 years ago
7

Anyone I’m really lost

Mathematics
1 answer:
Savatey [412]3 years ago
3 0

Answer:

The answer is option 3.

Step-by-step explanation:

You have to substitute H+=2×10^(-9) into the equation of pH :

pH = -log[H+]

H+ = 2×10^(-9)

pH = -log[2×10^-9]

= 8.70 (3s.f)

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