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svlad2 [7]
3 years ago
11

URGENT !!!

Mathematics
1 answer:
Sedaia [141]3 years ago
8 0

Answer:

{ \tt{pH =  -  log[H {}^{ + } ]}} \\  pH =  -  log(4.2 \times  {10}^{ - 5} )  \\ pH = 4.38

Step-by-step explanation:

H

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