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Calculate the plate height (H) for a 16 cm-long column with a stationary phase particle diameter of 6.0 ?m.
Energy of visible photos and breaking of the bond in AgI, The silver iodine bond energy is approx 255kJ/mol. (AgI is one of the active components in photograpgy sunglasses.)
What is the theoretical yield of chromium that can be produced by the reaction of 40.0 g of Cr2O3 with 8.00 g of aluminum according to the following equation?
calculate the molecular mass of the nonionic solutes. 8.02 grams of solute in 8.61 grams of water lower the freezing point to -0.430 degress celcius.
throat lozenges was dissolved in enough water to make 10.0 mL of solution at 25 degrees C. The osmotic pressure of the resulting solution was 4.95 atm. Calculate the molar mass of the compound. Answer in g/mol.
A galvanic (voltaic) cell consists of an electrode composed of chromium in a 1.0M Chromium(II) ion solution and another electrode composed of silver in a 1.0M silver ion solution, connected by a salt bridge.
If the pressure is measured at a temperature of 25.0 °C, then the volume of the tank must be ___ liters. (Round your answer to one decimal place and do not include units with the number.)
A compound is 40.0%C, 6.70%H, and 53.3%O by mass. Assume that we have a 100.g sample of this compound. What are the subscripts in the empirical formula of this compound?
The osomotic pressure of this solution was 10.68 torr at 25 degrees C. What is the molecular mass of the protein?
Oxygen and sulfur combine to form a variety of differenet sulfur oxides. Some are stable molecules and some, including S2O2 and S2O3, decompose when they are heated
At 25 ºC, the vapor pressure of water is 23.8 torr. What is the vapor pressure of a solution prepared by dissolving 97.0 g of C6H12O6 (a nonvolatile solute) in 170 g of water.
A cylinder is separated into two sections Y and Z by an insulating frictionless piston and sealed at both ends. Each section has two moles of an ideal gas.
If a gas held at constant pressure had an initial volume of 5.00 L and the temperature changed from 35°C to 578 K what would be the final volume of this gas?
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