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A person ate 0.516 pound of cheese (an energy intake of 4130 kJ). Suppose that none of the energy was stored in his body. What mass (in grams) of water would he need to perspire in order to maintain his original temperature? (It takes 44.0 kJ to vaporize 1 mole of water.)
Consider the following reaction for the dissociation of benzoic acid (MW=122 g x mol^-1) in water where Ka for benzoic acid is 6.5 x 10^-5. C6H5COOH(aq) + H2O (l) C6H5COO-(aq) + H30+(aq)
A chemist at a pharmaceutical company is measuring equilibrium constants for reactions in which drug candidate molecules bind to a protein involved in cancer. Calculate the Kc value for the A-protein binding reaction.
If the specific heat of the ball bearing is .474 J/g times degress C, calculate the final temperature of the water. Assume the calorimeter to have neglible heat capacity.
what is the maximum mass of product (oil of wintergreen) that could be formed? The density of methanol is 0.791 g/mL.Give your answer in grams with 3 significant figures.
Aluminum reacts with hydrochloric acid to produce aluminum chloride and hydrogen gas. If 927 mL of hydrogen gas is collected by displacement of water at 740.0 mm Hg and 20. °C.
A 1.0 L buffer solution is 0.250 M LiC2H3O2 and 0.050 M HC2H3O2 . Which of the actions will destroy the buffer? (a)adding 0.050 moles of LiC2H3O2(b)adding 0.050 moles of HCl(c)adding 0.050 moles of HC2H3O2(d)adding 0.050 moles of NaOH.
If a 189-mg piece of gold (density = 19.32 g/cm3) is hammered into a sheet measuring 2.4 ft 1.0 ft, what is the average thickness of the sheet in meters?
The value of the euro was recently $1.38 u.s. and the price of 1 liter of gasoline in france is 1.35 euro
A 100.00 ml of volume of 0.500 M HCl was mixed with 100.00 ml of 0.500 M KOH in a constant pressure calorimeter. The initial temperature of individual acid and base was 23 degree celsius.
How many molecules of carbon dioxide are produced when 123 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water.
Dissolve the crude product in the minimum amount of boiling solvent to keep the solution of the product at its saturation point and then allow to cool so pure crystals will form.
Calculate the equilibrium constant Kc for the reaction. C6H5OH (aq) + NH3(aq) --> C6H5Oâ€" + NH4+(aq)
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