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Would using sulfuric acid instead of hydrochloric acid with zinc metal change the outcome of the reaction
By comparison, what would it cost to heat the home using a ground source heating system with an electrically powered heat pump that has a COP of 5.0?
The mass of an electron is 9.11 * 10^{-31} kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.31*10^{-10}m, how fast is the electron moving relative to the speed of light?
A metal sulfide is 71.6% metal by mass. What is the mass fraction of the metal in the metal sulfide?
If the initial temperature of the water in the calorimeter was 20.25 °C, calculate the calorimeter constant (in J/K) for the coffee cup calorimeter.
The structure of HxWO3 could contain H+ ions or OH- ions. Which do you think is more likely? Why?
The vapor pressure of pure water at 70°C is 240. mm Hg. What is the vapor pressure depression of a solution of 150. g of the antifreeze ethylene glycol, C2H6O2, a nonvolatile compound, in 215 g of water?
how many grams of HNO3 must be dissolved to make 25L of a solution that has a pH of 1.5
A solution containing 100g of unknown liquid and 900g water has a freezing point of -3.33C. Given Kf=1.86C/m for water, determine the molecular weight of the unknown liquid and express your answer in g/mol.
What is the pH of the buffer that results when 12.5 g of NaH2PO4 and 22.0 g Na2HPO4 are mixed and diluted with water to 0.500 L? (The acid dissociation constants for phosphoric
A precipitate of calcium phosphate is in contact with 653.9 mL of water. How many grams of calcium ion are present in the solution
What is the amount of ammonia (as nitrogen) needed to sustain 1 gram/L of cells in an engineered bioreactor b. What is the amount of phosphorus needed to sustain the same concentration of cells in the reactor?
The Ka value for hydrocyanic acid is 4.9 x 10/\-10. Calculate the pH of a 0.095 M aqueous solution of HCN. The Kb value for pyridine is 1.7 x 10/\-9. Calculate the pH of a 0.050 M aqueous solution of C5H5N.
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