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A 110.0 −mL buffer solution is 0.110 M in NH3 and 0.135 M in NH4Br. Part...

A 110.0 −mL buffer solution is 0.110 M in NH3 and 0.135 M in NH4Br.

Part A: What mass of HCl can this buffer neutralize before the pH falls below 9.00? Correct Answer: 8.51x10-2 g

Part B: If the same volume of the buffer were 0.255 M in NH3  and 0.395 M in NH4Br, what mass of HCl could be handled before the pH falls below 9.00? Express the mass in grams to three significant figures.

Please help with Part B!

Incorrect Answers: 0.0211, 0.085, 0.0913, 2.41x10-5, 0.123, 0.112, 0.133, 0.0738, 0.184, 0.943, 0.108, 0.0227, 0.105, 0.095, 0.098

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