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The changege H for the solution process when solid sodium hydroxyde dissolves in water is 44.4 kJ/mol. when a 13.9 g sample of NAOH dissolves in 250.0 g of water in a coffee cup calorimeter, the temperature increases from 23.0 C degrees to ....how many C degrees? Assume that the solution has the specific heat as liquid water 4.18 J/g-K.
For the following gaseous rxn, if the system is heated and compressed, which way will it shift to restore equilibrium. A + B 2C + D + Δ
Determine the boiling point of the solution If 11.9 grams of a nonelectrolyte with molar mass = 30.5 g/mol are combined with 200.0 grams of the solvent,?
A solution is prepared by mixing 13.00ml of 0.0021M (aq) Hg2(NO3)2 with 25.0ml of 0.015M HCl. Assume that volumes are additive.
how much energy is liberated when 366 g of mercury (c=0.139j/g degrees celsius)cools from 77.0 C to 12.0 degrees celsius?
Which type of mutation is expressed when a DNA sequence changes from GGA TCA CCG GAA
A buffer solution contains 0.10 mol of acetic acid and 0.13 mol of sodium acetate in 1.00 L. What is the pH of this buffer?
A sample of Br2(g) takes 50.0 min to effuse through a membrane. How long would it take the same number of moles of Ar(g) to effuse through the same membrane
The initial rates at various substrate concentrations for an enzyme-catalyzed reaction are as follows. [S]/M.............Vo/10^-6 M/min 2.5x10^-5.......38.0 4x10^-5.........53.4 6x10^-5.........68.6 8x10^-5.........80.0 16x10^-5.......106.8 20x10^..
Potassium hydroxide is used to precipitate each of the cations from their respective solution. Determine the minimum concentration of KOH required for precipitation to begin in each case. A - 2.8*10^-3 M Fe(NO3)2 B - 1.6*10^-3 M MgBr2
A buffer solution is made by adding 5.05 g of KOH (56.1 g/mol) to 500.0 mL of 0.400 M benzoic acid, HC7H5O2 (Ka = 6.6×10^-5). Calculate the pH of the solution that results when 100.0 mL of 0.150 M HCl is added to the above buffer (total volume is 6..
Select all of the correct statements about reaction rates from the choices below. The lower the rate of a reaction the longer it takes to reach completion.
To what temperature must a substance be heated so that its thermal energy is about 9 kJ/mol? Express your answer to the nearest degree.
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