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Hydrogen gas can produced in the laboratory through the reaction of magnesium metal with hydrochloric acid. What is the volume, in liter, of H2 gas produced at 24°C and 835 mmHG, from the reaction of 12.0 g of Mg?
NH3 and NH4+ are used to create a buffer solution. When a base is introduced into this buffer, which of NH3 and NH4+ reacts with the base to maintain the pH of the solution
A column of water exerts, a pressure of 100pa and a force of 2.0 N. What is the cross sectional area of the column?
A reaction has an activation energy of 32 kj/mol. If the temperature of the reaction doubles from 45 to 90 degrees by what factor will the ratio of the rate constants, k2/k1,change
The payment sugar beet growers receive is based on the sucrose content of their delivered beets. A sample is taken from each load of beets and the sugar content in the beets is determined by polarimetry of the beet extract. In a typical situation ..
How many electrons must aluminum lose before it can reach a stable electronic configuration? Use the table of ionization energy to justify your answer.
An unknown gas effuses 0.917684 times as fast as oxygen gas under the same conditions. What is the molar mass (g/mol) of the unknown gas. What is the chemical formula of the unknown gas.
Approximate the percent increse in waste size that occurs when a 155lb person gains 40.0 lbs of fat. Assume that the volume of the person can be modeled by a cylinder that is 4.0 feet tall.
Determine the concentrations of Ag+ and C2O4- in a saturated aqueous solution of Ag2C2O4. Ksp = 3.5 x 10-11
A clinic took temperature readings of 250 flu patients over a weekend and discovered the temperature distribution to be Gaussian, with a mean of 101.30°F and a standard deviation of 0.8490
Chlorine is widely used to purify municipal water supplies and to treat swimming pool waters. Suppose that the volume of a particular sample of Cl2 gas is 8.80 L at 885 torr and 25*C.
A certain substance has a molar heat of vaporization of 31.6 kj/mol. How much of the sunstance is in a sample that requires 57 kj to vaporize.
Compare the natural chemistry that takes place in the environment with the chemistry that takes place due to man made factor like pollution.
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