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If 30.0mL of 0.250 M calcium nitrate is added to 1.25g of potassium phosphate, explain what is the mass (in grams) of the resulting calcium phosphate precipitate?
calculate the maximum number of moles, liters and grams of H2S that can form when 187 g lead sulfide reacts with 140. g water at 29.0 °C and 0.75 atm of pressure.
An aqueous solution has a vapor pressure of 84.0 at 50 . The vapor pressure of pure water at this temperature is 92.6 . What is the concentration of in mass percent?
nickel has a face-centered unit cell with all atoms at lattice points and an edge length of 352.4 pm. the density of
A vitamin C capsule is analyzed by tirating with 0.3M NaOH. It is found that 24.4 ml of base is required to react with a capsule weighing 0.55g.
How do you balance the equation for the oxidation of alanine to liquid water, nitrogen gas, and carbon dioxide gas
Find the equilibrium concentrations of A and B for a=2 and b=1. Assume that the initial concentration of is a= 1.0 and that no b is present at the beginning of the reaction. Consider the following reaction and associated equilibrium constant:
The base-dissociation constant of ethylamine (C2H5NH2) is 6.4 × 10-4 at 25.0 °C. The of [H+] in a 1.6 × 10-2 M solution of ethylamine is __________ M. ( Ans: 3.5 × 10^-12)
The solubility of nitrogen in water exposed to the atmosphere, where the partial pressure of nitrogen is 593 mmHg, is 5.3 × 10-4 M. At the same temperature, what would be the solubility of pure nitrogen, at a pressure of 760 mmHg
Assuming complete dissociation and ideal behavior, what would be the boiling point of an aqueous solution of MgCl2 that is 8.0% MgCl2 by mass? For H2O
A 1.23 mol sample of KOH is dissolved in 425 ml water. find the molarity of the solution
A solution is made by dissolving 5.2246g of EDTA in 4.0000 liters of DI water. Assuming the EDTA was dried at 80°C and it still contains 0.3% excess moisture, calculate the EDTA molarity. (0.003499M)
An industrial wastewater contains 2000 mg/L of total Ammonia as N, 490 mg/L of total Ni and has no inorganic carbon. The PH = 2.8. Using the diagram calculate to what pH the waste must be adjusted to so that the total Ni concentration is 1 mg/L.
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