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Can someone please explain to me in detail how to do this problem? What is the...

Can someone please explain to me in detail how to do this problem?

What is the pH of a solution obtained by mixing 3.15 g HNO3 and 2.6 g NaBr in water to create 755 L of solution? The molar mass of HNO3 is 63.1 g/mol and the molar mass of NaBr is 102.9 g/mol.

A] 5.23
B] 6.15
C] 4.48
D] 4.18
E] 1.12
F] 4.00
G] 3.54
H] 2.38
I] 3.88

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therefore option [E] is correct.

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