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If the hindenburg held 200000 m^3 of hydrogen gas at 23 degrees C and 1.0 atm, what mass of hydrogen was present
As a technician in a large pharmaceutical research firm, you need to produce 350.mL of 1.00 M potassium phosphate buffer solution of pH = 6.87. The pKa of H2PO4- is 7.21.
If I burn 0.315 moles of hexane (C6H14) in a bomb calorimeter containing 5.65 liters of water, what's the molar heat of combustion of hexane is the water temperature rises 55.4 ºC? The heat capacity of water is 4.184 J/g ºC .
Starting with 86.3 g NO and 25.6 g H2, find the theoretical yield of ammonia in grams
an electron is confined to a linear region with a length of the same orderas the diameter of an atom (about 100 pm)
Consider the cell described below. Al | Al3+ (1.00 M) || Pb2+ (1.00 M) | Pb Calculate the cell potential after the reaction has operated long enough for the [Al3+] to have changed by 0.32 mol/L. (Assume T = 25°C.)
What minimum mass of succimer (C4H6O4S2) is needed to bind all of the lead in a patient's bloodstream? Assume that patient blood lead levels are 25 , that total blood volume is 5.0 L , and that one mole of succimer binds one mole of lead.
What is the net charge on glucose 6 phosphate at pH 7.2? the pK's for glucose-6-phosphate are 0.9 and 6.0.
Sodium carbonate was used to precipitate silver from a solution. 6.00 grams of silver carbonate were recovered from 1.500L of solution. What was the concentration in ppm of silver ions in the original solution?
What was the percentage by mass of Mg(OH)2 in the original sample? When Mg(OH)2 or Al(OH)3 reacts with HCl(aq), the products are a chloride and water.
what volume and mass of steam at 100c and 1.00 atm would release the same amount of energy during condensation as 100.cm3
tripling the concentration of A increases the rate by a factor of 27, doubling the concentration of B has no effect on the rate, and tripling the concentration of C increases the rate by a factor of 3. Write down the rate law for this reaction.
Calculate ?Sºf for oxalic acid and ?Sº for the combustion of one mole of oxalic acid. c) Calculate ?Gºf for oxalic acid and ?Gº for the combustion of one mole of oxalic acid.
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