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solution of sodium chloride contains 5.2 g NaCl in 900 grams of water. What is the concentration of the solution in parts per million (ppm)? Round to the nearest tens place. Don't forget the unit.
What will be the final concentrations of NH3,N2, and H2 after equilibrium is established. I know the answers are suppose to be H2=.170M, NH3=.0424M, N2=.0568M, but I don't know how to get them.
How many grams of dry NH_4Cl need to be added to 1.60 L of a 0.800 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.99? Kb for ammonia is 1.8*10^{-5}.
How many grams of a stock solution that is 87.5 percent H2SO4 by mass would be needed to make 275 grams of a 55.0 percent by mass solution.
a star is estimated to have a mass of 1x1036 kg. assuming it to be a sphere of average radius 7.5x105 km calculate the
the structures of the ions Ni2+ (aq) and Fe3+ (aq) as they exist in aqueous solution in octahedral shape.
Calcium and Magnesium carbonates occur together in the mineral dolomite. Suppose you heat a sample of the mineral to obtain the oxides,CaO and MgO, and then treat the oxide sample with HCl.
what is happening to the observed cell potential, Ecell and E0Cell as Zn2+ increases and Cu2+ decreases?
What is the concentration of a solution made from 15ml of 2.0M HBrO, 20.0ml of H20, and 9.7g HBrO (mm=97g/mol)
A 2.42-L flask is filled with propane gas (C3H8), at 1.00 atm and -13.0°C. What is the mass of the propane in the flask.
When 2 moles of Mg3N2 are allowed to react with water to form ammonia gas and magnesium oxide, how many moles of H2O are required?
How much heat is required to convert 27.0 grams of ethanol at 28 degrees celcius to the vapor phase at 78 degrees celcius?
Verify the following statements (a) One part per million corresponds to one minute in two years, or a single penny in $10,000.
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