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When 10.0 g of potassium bromide dissolve in 50.0 g of water in a coffee-cup calorimeter, the temperature drops from 18.0°C to 9.5°C. Assume that all the heat is absorbed in the solution process comes from the water. (Specific heat of water = 4.18 J/g•°C.)(a) Write a balanced equation for the solution process.
what is the maximum wavelength of light that can be used to exhibit the photoelectric effect with lithium metal? it requires 279.7 kJ to remove one mole of electrons from Li atoms
CO 5) What should be the coefficient of hydrogen, H2, in the following equation in order to make it balanced? 2 Al + 3 H2SO4 ---> Al2(SO4)3 + ? H2
What is the theoretical yield for this reaction under the given conditions? 1.40 g of H2 is allowed to react with 10.0g of N2, producing 1.65 g NH3.
The pressure of the gas remaining in the vessel of unknown volume was 0.882 atm. All the measurements were done at the same temperature. What is the volume of the vessel?
U know that a certain sugar molecule contains higher energy phosphate bond than the gamam phosphate of ATP under the standard condition
calculate the specific heat of a substance if a 35 gram sample absorbs 28 joules as the tempature is raised from 292 kelvin to 313 kelvin.
Indicate the concentration of each of ion present in the solution formed by mixing
Calculate the amounts of Na2HPO4 and NaH2PO4 (in grams) needed to prepare 200 mL of a buffer with pH = 8.25 so that the sum of concentrations
The Ksp for Al(OH)3 is 2 x 10-32. At what pH will a 0.2 M Al3+ solution begin to show precipitation of Al(OH)3.
a tightly sealed 5.0 l flask contains argon at 71.6 deg. c and 781 mm hg. the flask is heated until the pressure is
What is the pH of a solution resulting from the titration of 50 mL of 0.050 M acetic acid solution, CH3COOH, with 50 mL of 0.050 M NaOH solution
Draw thw active site of an enzyme that contains a macrocycle coordinated to a transition metal. Explain the function of the enzyme
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