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Student collects 47.56mL of hydrogen gas over water at a temp of 22C. The atmospheric pressure is reported to be 29.78 in Hg. I have found that atmospheric pressure in mmHg is 756.412, and the vapor pressure of water at 22C is 19.827 mmHg. a. what is the pressure of dry H2 in mmHg? and in atm? Assuming the ideal gas behavior, how many moles of H2 gas were collected?
How much PV work is done, if 90 grams of ethylene and 120 grams of HCl are allowed to react at atmospheric pressure and the volume change is -71.2 liters?
The half-life for the reaction at 550 C is 81.3 seconds. How long does it take for 78.5% of a phosphine sample to decompose?
Calculate the wavelength in nm: a) a muon (a subatomic particle with a mass of 1.884 x 10^-25 g) traveling at 345 m/s b) an electron (me = 9.10939 x 10^-28 g) moving at 3.80 x 10^6 m/s in an electron microscope
How many grams of silica were in a 6.00 grams sample, if it took 34.1 mL of 0.95 M HCl to react with all of calcium carbonate
Look at the table of polyatomic ions and determine what happens to the charge on the polyatomic ion, phosphate when an H+ is added to the formula. What is the new name
what volume of liquid benzene must be vaporized to give that average concentration in a room
The equilibrium constant at 427°C for the reaction N2(g) + 3H2(g) 2NH3(g) is Kp = 9.4 × 10-5. Calculate the value of ΔG° for the reaction under these conditions.
How many different tetrapeptides containing 2 molecules of alanine and 2 molecules of valine could theoretically exist?
Starting with the previous noble gas, write the condensed ground-state electron configuration of an atom of the following elements.
What is the pH of a solution made by dissolving 46g of acetic acid in enough water to make 700 ml of solution
The mole fraction of A in the vapor is found to be 0.67. What is the mole fraction of A in the solution?
Since heat is an extensive property, the amount of heat that is produced depends on the amount of reactants utilized in the reaction. If you have more reactant then you will have more heat. Just think of a big fire cracker versus a small fire crac..
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