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A sample of hydrogen gas was collected over water at 36°C and 855 mm Hg. The volume of the container was 6.50 L. Calculate the mass of H2(g) collected. (Vapor pressure of water = 44.6 torr at 36°C)
A student made an acetic/acetate buffer by mixing 4.665 g of sodium acetate into 600.00 mL of a 0.0242 M acetic acid solution. What would the pH of the solution be as the result of the addition of 0.0050 mols of hydrochloric acid to the buffer
The atomic mass of element X is 33.42 amu. A 21.83-g sample of X combines with 80.32 g of another element Y to form a compound XY. Calculate the atomic mass of Y.
What is the approximate pH of a solution of the salt NH4(O2CCH3) Ammonium Acetate? No calculations, only reasoning needed.
If 25 mL of 0.060 M HClO4 is mixed with 50 mL of 0.060 M KOH, what will be the resulting pH?
Assuming a tank temperature of 16oC, what mass of oxygen is contained in the two tanks?
Methane is completely burned with 20.0% excess air, with 25.0% of the carbon going to CO. What is the partial pressure of CO in the stack (exit) gas if the gas exits at a pressure of 740 mm Hg and a temperature of 300°F
What mass of carbon monoxide in grams is present in a room measuring 8.5 12.0 18.4 ft ?
How much energy in kJ is needed to heat 5.00g of ice from -10.0oC to 30.0oC? The heat of fusion of water is 6.01 kJ/mol and the molar heat capacity is 36.6 J/(oK.mol) for ice and 75.3 J/(oK.mol) for liquid water.
Which of the five cobalt complexes, [Co(NH3)5X]^y+ (where X is one of the five ligands, Br-, Cl-, F-, H2O, or NH3 and y is the magnitude of the positive charge) will absorb the shortest wavelength of light? Which will absorb the longest wavelength..
Metals such as magnesium and zinc react with dilute sulfuric acid to give hydrogen, according to the equation: M (s) + H2SO4 (aq) -------> MSO4 (aq) + H2 (g) When 5.00 g of a mixture of powdered magnesium and zinc were dissolved in diluted sulfuri..
Explain what is meant by the discontinuous emission spectra of atoms (seen in flame tests or gas discharge tubes) and how the Bohr (Planetary) and Schrodinger (Quantum-Mechanical) model for electron structure explains these discontinuous spectra
If the pressure increases to 800. torr, how many moles of gas were added to the container? Assume a constant-volume container.
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