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200 drops of 0.025 M NaF solution and 100 drops of 0.025 M Ba(NO3)2 solution are mixed.
a.) write the equation for the formation of solid BaF2.
b.) Calculate the concentration of each ion in the mixed solution.
c.) calculate the Qsp for these concentrations in b.
d.) Ksp for Ba F2 = 1.7x10^-6. When the solutions in a.) are mixed, will a precipitat form?
verify the law of multiple proportions for an element X, which forms oxides having percentages of X equal to 77.4%, 63.2%,69.6% and 72.0%
CO(g)+2H2(g)->CH3OH(g) How many moles of each reactant are needed to produce 3.60 X 10^2g of CH3OH?
An automobile has a wavelength that is not measurable by human standards. If the car has a mass of 4000 lbs (1.81 x 103 kg) and travels at 60 miles/hr (26.8 m/s), calculate the wavelength of the car.
The pH of the solution at the equivalence point. e) The pH of the solution after 40.0 mL of HCl are added.
A gas mixture being used to simulate the atmosphere of another planet consists of 324 mg of methane, 217 mg of argon, and 228 mg of nitrogen.
A chemist produces 460 mL of oxygen gas at - 43 °C and constant pressure. To what Celsius temperature must the oxygen be warmed in order for it to have a volume of 600 mL?
What is the concentration of unknown acid solution? Write the neutralization reaction, balance it, name the products THEN Solve the problem above.
A sample of nitrogen gas is collected over water at a temperature of 23.0 degrees Celcius. What is the pressure of the nitrogen gas if atmospheric pressure is 785 mm Hg?
Find the change in the fraction of visibility for a person from planet Krypton with x-ray vision in addition to visible spectrum.
The Reaction 2NOCl(g)---->2NO+CL2(g) has rate-constant values for the reaction of NOCl of 9.3x10^-6/s at 350K and 6.9x10^-4/s at 400K. Calculate activation energy for the reaction. What is the rate constant at 435K?
A mixture of CO, CO2 and O2 is contained within a 275 mL flask at 0C. If the total pressure is 780 torr, the CO has a partial pressure of 330 torr and the CO2 has a partial pressure of 330 torr, what is the partial pressure of O2?
A sample of ethanol (C2H5OH) has a mass of 43.8 g.(a) How many carbon atoms does the sample contain?
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