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If the specific heat of water is 4.18 J/g x Celsius for a mass of 125 g of water which increased in temperature by .121 Celsius when 2.4 x 10^-4 g of sodium hydroxide (NaoH) was dissolved, what was the enthalpy of dissolution in units of KJ/mol of NaOH? (assume that the mass of the sodium hydroxide did not change the heat capacity of the water significantly.) answer in KJ/Mole of NaOH
Which of the following addition will result in no change in the pH of the solution a. Adding ammonium nitrate to an ammonia solution.
Calculate the volume of O2 at STP, required for the complete combustion of 175 g octane (C8H18) to CO2 and H2O?
Raw milk sours in 4.0 hours at 28 degrees celcius but takes 48 hours to sour in a refrigerator at 5 degrees celcius. Calculate the activation energy for the souring of milk?
A balloon was filled by mixing 10.0g of Ne(g) and 10.0g of O2(g). What is the mole fraction of oxygen in the balloon.If the total pressure in the balloon is 760 Torr, what is the partial pressure of the oxygen
Nitrogen monoxide, a colorless gas, dissociates via an equlibrium process to form nitrogen gas and oxygen gas, when it is heated to very high temperatures.
In the titration of a weak base (0.100 M piperazine, 40 mL) with a strong acid (0.100 M HCl). Calculate the pH values between 0 mL Va and 100 mL in 10 mL steps. The two Ka values of piperazine are 4.65 x 10^-6 and 1.86 x 10^-10
The vapor pressure of CCl3F at 300 K is 856 torr. If 11.5 g of CCl3F is enclosed in a 1.2 -L container, will any liquid be present. If so, what mass of liquid
describe the appearance of the solution if drops of .01M AgNo3 had been added directly to the test solution and then centrifuged
An aqueous solution of glycerol C3H8O3 is 48% glycerol by mass. Calculate the molality of the glycerol solution
What is the expected Nernst responce, in mV, for each decade change in the gydrogen ion concentration for a glass electrode
what mass of water would need to evaporate from your skin in order to dissipate 1.7 times 105 j of heat from your body?
What is the ratio of the number of molecules having twice the most probable speed to the number having the most probable speed
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