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A 515- sample of unknown solution reacts completely with to form 20.1 . What was the concentration of the solution?
consider the following equilibrium system H2(g)+ Br2(g)=2HBr(g) Keq= 14.8 A closed container is initially filled with equal moles of H2 and Br2.When equilibrium is reached the (HBr) is 0.329 mol/L What is the initial (H2)
If the oven uses microwave radiation of wavelength 12.2 cm, how many photons of this radiation are required to heat 1.28 g of water 1.00°C, assuming that all the photons are absorbed?
Calculate the work done in joules, when 4.5 L of argon expands to 11 L at constant temperature against an external pressure 545 torr.
A cylinder contains a mixture of hydrogen and chlorine molecules. Compare without doing any calculations
The work function of an element is the energy required to remove an electron from the surface of the solid element. The work function for lithium is 279.7 kJ/mol.
If a 2.1 L reaction vessel initially contains 723 torr of cyclopropane at 485 degrees C , how long will it take for the partial pressure of cylclopropane to drop to below 105 torr ?
The catalytic converter on your automobile contains small amounts of a precious metal catalyst. Which of the following components would you expect to be decreased in your tailpipe emissions.
Calculate the density of hydrogen sulfide gas, H2S, at 60.°C and 953 mmHg. Obtain the density in grams per liter.
How much PPP do you need to make 500ml of the solution if you only have 25g and you know that the MW of PPP is 478 g/mole.
A weather balloon at Earth's surface has a volume of 4 L at 285 K and 791 mmHg. If the balloon is released and the volume reaches 4.19 L at 711 mmHg.
Determine the percent by mass of calcium carbonate in the sample
How many grams of sucrose (C12H22O11) must be added to 509 g of water to give a solution with a vapor pressure 0.723 mmHg less than that of pure water at 20 degrees C.
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