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When steam condenses to liquid water, 2.26kJ of heat is released per gram. The heat from 168g of steam is used to heat a room containing 6.44 X 10power of 4 of air. The specific heat of air at normal pressure is 1.015J/g.C. What is the change in air temperature, assuming the heat from the steam is all absorbed by air?
Calculate the pKa of the second ionizable group of Z.
How many grams of the strong acid HClO4 must be combined with water to make 400 ml of a solution with a pH of 1.5.
A mixture of three gases has a total pressure of 1,380 mmHg at 298 K. The mixture is analyzed and is found to contain 1.27 mol CO2, 3.04 mol CO, and 1.50 mol Ar. What is the partial pressure of Ar
A color change in the reaction mixture occured after 40 seconds. A. Assuming 25 drops per mililiter for all solutions, determine the inital molar concentration of HIO3
A first order decomposition reaction has a rate constant of 0.0418yr-1. What is the half-life of the reaction in yr
Hydrogen gas, H2(g), reacts with iodine gas, I2(g), to form HI(g) by the following proposed reaction mechanism with the listed hypothetical activation energies
Write a mechanism for the reaction of an alkyl halide with alcoholic silver nitrate which depicts the type of substitution which occurs. Explain how this mechanism accounts for the relative rate of reactivity of 1o, 2o and 3o halides in this react..
Calculate the amount of work that can be obtained from this reservoir before it cools to the temperature of the cold reservoir which is 0C. Assume that the heat capacity of water is constant over this temperature range at 75 J/(mole*K). Calculate ..
How much time is required to produce 200g of alumimun metal for molten aluminum oxide dissolved in cryolite, if you use a 12.0 amp current.
The pKa of protonated diethylamine is 10.94. What are the major forms present in a dilute soultion that is equimolar in acetic acid and diethylamine
Consider a 15.0 mL sample of a ternary mixture composed of 25% (by volume) octane, 35% chloroform and 40% 2-propanol. Use the following information to convert volume composition to molar composition:
a 265- flask contains pure helium at a pressure of 761 . a second flask with a volume of 490 contains pure argon at a
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