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The volume of a gas dropped from 300 ml to 280 ml when the original pressure of 200 torr was increased. what was the new pressure in kpa if the temperature is held constant.
Acid-catalyzed dehydration of an alcohol most closely resembles an E1 mechanism when secondary and tertiary alcohols are involved.
A buffer is prepared by mixing 429 mL of 0.255 M NaOH with 677 mL of 0.795 M sodium bicarbonate (NaHCO3). Given that the Ka1of H2CO3 is 4.5 x 10-7
When mixed HCl an acid and NaOH a base will react with each other. a) Write the balanced neutrali zation equation for this reaction
what is the relative error in the determination of a density for which the accepted value is 0.945 g*cm^-3 and the experimental value
A gas is initially at 1.2 atm, 15.0 L, and O°C. What is the final pressure when the same amount of gas is heated to 10°C and the volume changed to 24.0 L
You prepared a 0.250 M solution by diluting 8.45(+-0.04)mL of 28.0(+-0.5)mL wt.%NH3 (density=0.899(+-0.003)g/mL up to 500.0(+-0.2)mL. Find the uncertainty in 0.250 M.
The ionization energy of hydrogen is reported to be 1.31x10^6 J mol^-1 of H. (1) compute the ionization energy for a single atom of hydrogen.
The temperature of the glucose solution is 20degrees Celsius. What pressure drop must be applied across the membrane to stop the flow of water into the glucose solution. Assume that the glucose concentration is 1 mg mL^-1 and that the molecular we..
How many molecules (not moles) of NH3 are produced from 2.73×10?4 of H2 ? Express your answer numerically as the number of molecules.
A solution of ethanol (C2H5OH) in water is prepared by dissolving 65.8 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution.
In the combustion of propane for energy, how many kilojoules of heat are produced when 2 kilograms of propane are completely combusted in the presence of excess oxygen
A sample of mercury (II) oxide is placed in a 10.00 L evacuated container and heated until it decomposes entirely to mercury metal and oxygen gas. The container is then cooled to 22.5 degress celcius.
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