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One mole of CaCO3 (solid) is place in an evacuated cylinder that is fitted with a frictionless piston. It is heated to 800 degrees, at which point it decomposes to CaCO (solid) and CO2 (gas). Calculate the work done assuming complete decomposition at 1.00 bar. How much work would be done if there was no piston and the container was open to the atmosphere?
experiment to determine delta H of solution, would you expect to get a larger, smaller or identical temperature change? why?
Into how many tubes can you dispense 450microliters of buffer using a micropipette set at 2.5 microliters
Why is it important to recrystallize the chalcone before proceeding with the hydrogenation reactions?
A solution containing 10g of a non-ionic compound in 90g water has a freezing point of -3.33 degrees C. Given that Kf = 1.86 degrees C/m for water
An open-end manometer containing mercury was connected to a vessel holding a gas at a pressure of 840 torr. The atmospheric pressure was 610 torr. What is the difference in the heights of the mercury, expressed in cm
How long would it take the same number of moles of Ar(g) to effuse through the same membrane?
During an experiment to find molar volume of oxygen, assume that you heated your sample too rapidly, and some of the sample spattered onto the rubber stopper in the test tube
An experiment shows that a 250 mL gas sample has a mass of 0.430 g at a pressure of 728 mmHg and a temperature of 26 C. What is the molar mass of the gas?
acidifying with dilute H2SO4 and titrating with a 0.01804 M KMnO4 solution. 33.15 mL of the permangate solution was needed to reach the end point of the titration. What is the actual molar concentration of the H2O2 solution?
An ideal gas is allowed to expand at constant temperature from a volume of 1.00 L to 5.00 L against a constant external pressure of 2.00 atm. What is the value of w, the work done on the gas
the molar heat capacities of iron and gold are 25.19J/(mol*degrees celsius) and 25.41 J/(mol*degrees celsius), respectively. what is the final temperature of the water and pieces of metal?
Calculate the mass of zinc iodide formed when you have 1.o grams of zinc metal and 1.0 grams of iodide crystals
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