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aev [14]
3 years ago
10

PLS HELPP FIRST TO BE CORRECT WILL GIVE BRANLIEST!!

Chemistry
1 answer:
Setler [38]3 years ago
8 0

Answer:

BaF2 + Na2S → BaS2 + <u>2</u>NaF (balanced equation)

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Enough of a monoprotic acid is dissolved in water to produce a 0.0121 M solution. The pH of the resulting solution is 6.49. Calc
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Calculate the H positive from the pH equation: pH equals -log (H positive). This would be 10 to the -6.49. Let's call the acid HA. To calculate Ka in this equation, Ka equals H positive times A- over HA. HA is going to be the 0 0121. So, Ka=(10^-6.49)^2/0.0121. This equals 1.05*10^-13/0.0121. Ka then equals 8.65*10^-12.
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