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Suppose a tank is filled with A2(g) so that initial pressure is 0.8688 atm at temperature of 298K. Some of the A2(g) dissociates and when the system reaches equlibrium the total pressure in the tank is 1.275 atm. Calculate Kp and Kc for the reaction.
calculate the percent of radioactive parent atoms remaining 2 hours after medicine is administered. the percent is the
A 24-hour urine specimen was diluted to 2.000 L. After the solution was buffered to pH 10, a 10.00-mL aliquot was titrated with 27.32 mL of 0.003960 M EDTA. The calcium in a second 10.00-mL aliquot was isolated as CaC2O4(s) redissolved in acid, and t..
An unknown metal chloride has the formula MClx. The addition of 28.9 mL of 0.432 M aqueous lead (II) nitrate to 26.7 mL of 0.311 M aqueous MClx causes all the lead ions and chloride ions present in solution to precipitate out as lead (II) chloride
0.76 grams of acetic acid is solvated in enough water to make 50 mL of solution. The Ka for acetic acid is 1.8x10^-5. Calculate the concentration of the hydronium cation at equilibrium.
Phosgene a poisonous gas used during WWI, is composed of 12.1% C, 16.2% O, and 71.7% CI. What is the empirical formula of phosgene?
Calculate the partial pressure of each gas and the total pressure if the temperature of the gas is 21 degrees Celcius.
when a clean iron nail is placed in an aqueous solution of copper(ll) sulfate, the nail becomes coated with a brownish black material.
What is the volume percent of a solution prepared by dissolving 40 g of Ba(OH)2 in enough water to make a final volume of 120 mL? Show your work.How many mL of a 15% solution can be made from the solution above? Show your work.
Molecular mass of a sample of 0.299 g of a gas in a 0.220 L bulb under a pressure of 0.757 atm and at a temperature of 250 C
CO(g)+Cl2----COCl2(g) Kc=255 at 1000 K If the reaction mixture contains a CO concentration of 0.1500 M and a Cl2 concentration of 0.175 M at 1000K. What are the concetnrations of each substance when equilibrium is reached
Combustion of hydrogen releases 142 kJ/gram of hydrogen reacted. How many kcal of energy are released by the combustion of 16.0 oz of hydrogen? (1 lb = 16 oz; 1 kg = 2.2 lb)
What mass of carbon dioxide is produced from the complete combustion of 5.20×10-3g of methane?
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