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The solubility product of PbBr2 is 8.9x10^-6. Determine the molar solubility a) in pure water, b) in 0.20M KBr solution, c) in 0.20M Pb(NO3)2 solution.
In a gas mixture, the partial pressures are nitrogen 420 torr , oxygen 125 torr , and helium 245 torr. What is the total pressure (torr) exerted by the gas mixture?
Write a net ionic equation to explain why the pH didn't go up to about 10, as it would have if that amount of NaOH were added to distilled water or to 20ml 0.00040 M HCL, which also would have a pH of 3.40
What type of intermediate is formed upon treatment of 1-chloro-2,4-dinitrobenzene with sodium hydroxide at room temperature to give 2,4-dinitrophenol
NiCl2(aq)+ 2NaOH(aq)---> Ni(OH)2(s)+ 2NaCl(aq) how many grams of Ni(OH)2 are produced from the reaction of 35.0 mL of a 1.75M NaOH solution and excess of NiCl2.
draw 3 compounds with molecular formula c5h10 with c-c double bond with no cis-trans isomers
What is the half life of a first order reaction if it takes 4.4 x 10-2 seconds for the concentration to decrease from an initial concentration
A 10g sample of acetic acid HC2H3O2. was burned in a bomb calorimeter in an excess of oxygen. The temperature of the calorimeter rose from 25 C to 35.84C. If the heat capacity of the calorimeter and its contents is 13.43KJ/C, what is the enthalpy ..
a 93 L sample of dry air cools from 145 degrees C to -22 degrees C while the pressure is maintained at 2.85 atm. what is the final pressure?
For the following processes, calculate the change in internal energy of the system and determine whether the process is endothermic or exothermic:
what is the mass of the steel bar. Use the following values: specific heat of water = 4.18j/gc specific heat of steel = 0.452 j/gc Express your answer to three significant figures and include the appropriate units. mass of the steel =
A flexible container contains 1.50 L of gas at 25 degrees Celcius. What is the new volume when the container is heated to 100 degrees Celcius?
a cylinder with a moveable piston contains 0.93 of gas and has a volume of 344. what will its volume be if an
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