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Calculate the pH of each of the following buffered solutions.to 1.00 L of each of the four solutions.(a) 0.100 M propanoic acid (HC3H5O2, Ka= 1.3 10-5)
(b) 0.100 M sodium propanoate (NaC3H5O2)
(c) pure H2O
(d) a mixture containing 0.100 M HC3H5O2 and 0.100 M NaC3H5O2
Calculate the pH after 0.12 mol of NaOH is added to 1.00 L of the solution that is 0.59 M HF and 1.08 M KF.
Calculate the pH after 0.32 mol of HCl is added to 1.00 L of the solution that is 0.59 M HF and 1.08 M KF.
Considering the given equation Fe2O3 (s) + 3 CO (g) ? 2 Fe (s) + 3 CO2 (g) this is The overall reaction for the production of iron from iron ore (Iron (III) oxide) determine How many kilograms of iron are required to form 10,000 kilograms of Fe?
An injection containing 10.0pg 10 5 B was injected into a patient suffering from a brain tumor. The patient was irradiated by a neutron gun at the site of the tumor.
Determine the amount of heat energy is needed to raise the temperature of 0.362 kilograms of Cu from 23. Degree Celsius to 60 degree Celsius?
solution of water (Kf = 1.86^ C/m) and glucose freezes at - 2.55^ C. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 ^ C.
what is the density of a sample of ammonia gas, NH3, if the pressure is .928 atm and the temperature is 63.0 C?
How many moles of CF4 can be produced when 5.00 mol C react with 12.00 mol F2.
An experiment shows that a 112-mL gas sample has a mass of 0.120 g at a pressure of 733 mmHg and a temperature of 33.0°C.
calculate the difference in mass that is hold by a 500.0mL flask at a temperature of 0.0°C from that at temperature of 20.0 °C? (you can assume the volume of the sample at 0.0 °C temperature =volume of the sample at 20.0°C)
If an automobile is able to travel 247 mi on 10.8 gal of gasoline, what is the gas mileage in km/L.
Compute the volume of CO 2 and water vapour produced and the volume of oxygen remaining, when 20.0 dm 3 of propane reacts with 120.0 dm 3 of oxygen. All gas volumes are measured at the same temperature and pressure.
Assume a wind turbine with a hub 50 meters above the ground, a rotor diameter of 60 meters and a wind-conversion efficiency of 25 percent. The turbine operates in an area with an average wind-power density of 700 watts/sq meter at 50 meters altitude.
Calculate the pH of a solution prepared by dissolving 0.30 g of BaO in enough water to make 0.800 L of solution.
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