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For a certain reaction, the standard free energy change is -80.0 kJ at 300 K and -40.0 kJ at 600 K. What is ΔS in J/K for this reaction, assuming ΔH and Δ S do not change with temperature?
what happens to the mass of an icecube when we melt it an open
Calculate how much energy in the form of heat is available from 100mL of this mixture and compare it with the amount available from pure gasoline
How many grams of copper may be formed by the passage of 22,988 C through an electrolytic cell that contains an aqueous cuprous
The atmospheric oxidation of nitrogen monoxide, 2 NO(g) +O2(g) 2NO2(g), was studied at some temperature withinitial pressures of 1.000 atm of NO and 1.000 atm ofO2. A tequilibrium PO2=.506 atm calculate Kp 2NO(g)+O2(g) 2NO2(g)
Determine the pressure in Standard atmospheres,Torr and mm Hg units when A gauge on compressed gas cylinder reads 1500 psi ( pounds per square inch; 1 atm =14.7 psi).
a calorimeter has water of 22.0 grams at the temperature of fifteen degree celsisu . when 1.40 grams of a substance
An ammonia/ammonium buffer solution contains 0.19M NH3 and 0.61M NH4+. The Kb value of ammonia is 1.8 x 10^-5 . Calculate the pH of this buffer.
According to the following reaction, how many grams of ethylene (C2H4) are required for the complete reaction of 23.8 grams of hydrogen gas?
Compound A has the molecular formula C14H25Br and was obtained by reaction of sodium acetylide with 1,12-dibromododecane. On treatment of compound A with sodium amide, it was converted to compound B (C14H24).
what is the rate that sulfur hexafluoride would effuse through a system that allows oxygen to effuse at 22.1mL/min
1.45 g sample of an iron ore is dissolved in acid and the iron obtained is fe2 aq. to titrate the solution 21.6 ml of
A piece of tin weighing 85.251 g is placed into 41.1cm3 of ethyl alcohol (D=0.798) in a graduated cylinder and it sinks to the bottom . The alcohol rises to 52.8cm3
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