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Calculate the final temperature when a 24.7 gram sample of ice at 0oC is placed into a styrofoam cup containing 126 grams of water at 78.0 oC. Assume that there is no loss or gain of heat from the surroundings.
aluminum block and that the alcohol vaporizes at 25 degree Celsius). Heat of vaporization of the alcohol = 45.4 kj/mol at 25 0C
Glycerine (glycerol) CH2-OHCH2-OH has a greater resistance to flow (viscosity = 94) than ethanol CH3CH2OH (viscosity = 1.08)
a cylinder measuring 3.4 cm wide and 4.0 cm high is filled with gas. The piston is pushed down with a steady force measured to be 275 kpa
What would be the value of the change in concentration of C10H12/change in time during the same period of time? Explain why a catalyst for a forward reaction must also be a catalyst for the reverse reaction. Include an energy level diagram
How many possible trisubstituted derivatives C6H3X2Y can be obtained from the para disubstituted benzene C6H4X2?
Calculate the pH of a solution resulting from mixing together the following: a) 37ml of HCL 0.1M+33ml of NaOH 0.03M b) 55ml of HNO3 0,7M+88ml of KOH 0.8M c) 170 ml of H2SO4 0,44M_29ml of NaOH 1.2M d)76 liters of HBr 0.01M+2 liters of Mg(OH)2 2.1M.
When 0.062 moles of ammonium sulfate ((NH4)2SO4) are dissolved in enough water to make 200 milliliters of solution, how many ammonium ions are present.
Determine the molarity of a solution of twenty grams of Ammonium bromide, NH4Br, in enough water to produce 132 mL of solution?
Benzyl ethyl ether reacts with concentrated aqueous HI to form two initial organic products (A and B).
suppose the flame on a gas burner emits light just like a blackbody. The flame appears blue, emitting most of its light at a wavelength of 475 nanometers.
Suppose that the volume of a particular sample of Cl2 gas is 8.7 L at 895 torr and 24 degrees Celsius. How many grams of Cl2 are there in the sample.
Determine how many grams of methane is required to form 43.0 grams of CHCl3?
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