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A gas expands and does P-V work on the surroundings equal to 325 J. At the same time, it absorbs 127 J of heat from the surroundings. Calculate the change in energy of the gas.
"If 2.3g of Sodium reacted with 1.8g of water, what would be the total mass of Sodium Hydroxide and hydrogen produced? Explain your answer"
How many grams of CaCl2 would be dissolved in 1.2 L of a 0.10 M solution of CaCl2?
At equilibrium, the concentration of A is 0.381 M and that of B is 0.154 M. What is the value of the equilibrium constant, Keq?
a plutonium-239 atom may emit a photon of light with a wavelength of 24.0 pm when it undergoes nuclear fission. What is the frequency of this radiation?
What happens to it after bromination of Cholesterol takes place? (ie- why is it that bromination allows you to separate it from cholesterol?) 3) Give a stepwise mechanism for the debromination step
What is the value of the equilibrium constant at this temperature for the reaction of SO2 with N2O to form SO3 and N2 (balanced with lowest whole-number coefficients)?
A buffer is prepared by mixing 429 mL of 0.255 M NaOH with 677 mL of 0.795 M sodium bicarbonate (NaHCO3). Given that the Ka1of H2CO3 is 4.5 x 10-7
A fish tank holds 30.0 gal of water. Using a density of 1.0 g/mL for water, determine the number of pounds of water in the fish tank.
What is the the mole fraction of a solution prepared by dissolving 0.315 g of cholesterol
find the molarity when 7.85 moles aluminum chloride are dissolved in enough water to make a total of 600. mL
What is the pH of a buffer solution that is 0.0100 M in hypochlorous acid, HCIO, and 0.0300 M in sodium hypochlorite, NaCIO? (the Ka for HCIO is 3.5 x 10-8.)
Consider the reversible reaction: A(g) 2B(g) At equilibrium, the concentration of A is 0.381 M and that of B is 0.154 M. What is the value of the equilibrium constant, Keq?
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