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What is the pH of the sodium phosphate buffer described in problem #1 if 1 ml of 10M NaOH is added? What is the pH of 1 liter of water if 1ml of NaOH is added? How does this illustrate the importance of buffers?
Calculate the volume in milliliters of a 0.30 M acetic acid solution that contains 0.0142 mol HC2H3O2.
How many liters of NO(g) can be made from 17.57 L of O2(g) and 16.55 L of N2(g) at STP?
When 228.4 mg of pure X was burned 627.4 mg of CO2 and 171.2 mg of H2O were obtained. Determine the simplest formula of the compound X.
The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.253 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 26.9°C.
how many calories are used to heat a 50g sample of water from 8.1 degrees celius to 27.4 degrees celcius?
Calculate the molarity of a solution made by dissolving 0.850 grams of Na2SO4 in enough water to form exactly 930 mL of solution.
Determine the mass of lithium hydroxide produced when 0.38 g of lithium nitride reacts with water to make Ammonia (NH3) and Lithium hydroxide.
Glycerol HOCH2CH(OH)CH2OH is a nonvolatile, water-soluble material. its density is 1.25 g/mL. Predict the vapor pressure of a solution of 2.40 x 10^2 mL of glycerol, in 395 mL of water, at the normal boiling point of water.
A gas held at 798 mmHg in a 400 mL flask is released into a 3 L flask.Whats the new gas pressure?
Match each item in Column A with the corresponding item in Column B regarding the processes of nitrification and denitrification: Column A Column B a. NH4+ i. Electron acceptor for denitrification
A solution is made by dissolving 26.44 g of (NH4)2SO4 in enough H2O to make 50.75 mL of solution.What is the molar mass of (NH4)2SO4?
A 20.0-mL sample of 0.25 M HNO3 is titrated with 0.15 M Na OH. What is the pH of the solution after 30.0 mL of NaOH have been added to the acid?
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