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Hydrogen gas is produced when zinc reacts with sulfuric acid: If 164 of wet H2 is collected over water at 24C and a barometric pressure of 739 , how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 .)
Water (2290 ) is heated until it just begins to boil. If the water absorbs 5.43×105 of heat in the process, what was the initial temperature of the water?
A phosphorous acid buffer needs to be prepared to a pH of 5.92; given a 120mL solution of 25mM phosphorous acid, how many milliliters of either 0.5M KOH or 0.4M HCl will need to be added
What is the ratio of ground state energy of atomic hydrogen
For a protein w/ a molar mass of 1x10 6 u, calculate the molar concentration required to obtain an osmotic pressure of 10 matm at 25 degrees C.
The mass of substance B is twice the mass of substance A, but the specific heat capacity of substance A is four times the specific heat capacity of substance B.
Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose that a can contains a residual amount of gas at a pressure of 765 mmHg and a temperature of 35*C.
the solubility of oxygen in water at 25 degree celsius and 1.00 atm pressure is 0.041g/L. what is the solubility of oxygen in water at 6 atm pressure?
A block of Iron has a mass of 483 g. What is the mass of a block of Graphite that has the same volume as the block of Iron?
What is the equilibrium constant of the formation reaction of ammonia gas at 298.15 K under the conditions that the partial pressures
The concentration of this compound in the sample is 0.000030 M and the path length of the sample is 1.0 cm
The normal boiling point for H2Se is higher than the normal boiling point for H2S . This can be explained by
Calculate the percent by mass of aluminum in the sample. The vapor pressure of water at 20 degree C is 17.5 Torr.
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