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Chemistry homework help

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General Chemistry Homework

Hello, I have a homework of 25 question, or problem. and I am welling to pay 25 DOLLARS for this homework.

the homework is about chapter 4 "Three Major classes of Chemical Reactions".

need urgently

Groundwater containing 60 mg/L of CO2 at 10oC is pumped through a spray nozzle aerator, and the CO2 concentration is reduced to 5.6 mg/L. If the alkalinity of the water is 200 mg/L as CaCO3, and the initial pH is 6.93,  what is the  pH of the water after CO2 removal? Assume the water temperature remains at 10oC and that ionic strength corrections can be neglected.

 

need urgently

Groundwater containing 60 mg/L of CO2 at 10oC is pumped through a spray nozzle aerator, and the CO2 concentration is reduced to 5.6 mg/L. If the alkalinity of the water is 200 mg/L as CaCO3, and the initial pH is 6.93,  what is the  pH of the water after CO2 removal? Assume the water temperature remains at 10oC and that ionic strength corrections can be neglected.

 

Each week an industry produces 2.0 × 10^3 m3/d of a strong acid waste (pH = 1.5) during a 48 hour production

Each week an industry produces 2.0 × 10^3 m3/d of a strong acid waste (pH = 1.5) during a 48 hour production cycle (total 4.0 × 10^3 m3/week). The plant engineer would like to discharge the waste into a river that passes near the plant. The river has a 7-­‐day, 10-­‐year flow of 25 × 10^3 m3/d, an alkalinity of 150 mg/L as CaCO3, and a pH of 7.7. If the temperature of the mixture is 25oC,  will it be possible to discharge all the waste into the river within a 7-­‐day period if the river pH must be maintained above 7.0?

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