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The combustion of what volume of ethane C2H6, measured at 23 degrees celcius and 752 mmHG, would be required to heat 855g of water from 25 degrees celcius to 95 degrees celcius. The heat of combustion per mole of ethane is -84.7 kj/mol. Specific heat of water is 4.184 j/g degree celcius
When two atoms of 2H (deuterium) are fused to form one atom of 4He (helium), the total energy evolved is 3.83 × 10-12 joules. What is the total change in mass
Indicate the approximate location (cm-1) in the IR Spectrum where you would expect to see one or two absorptions that distinguish n-butyl, sec-butyl, and isobutyl from each other.
In this experiment we reduced methylene blue with ascorbic acid using HCl as a catalyst. Given that the half reaction for the reduction of methylene blue is MB+(ox) +2H +2e ----->MBH2(red) (potential = 100 mV)
If there are 0.640 g of NaCl left in a beaker that originally contained 75.0 mL of saltwater, what must have been the molar concentration of the original solution? The molar mass of NaCl is 58.44 g/mol.
The active ingredient of aspirin is acetylsalicylic acid, a monoprotic with a ka = 3.3 x 10 raised to -4 power. What is the pH of a solution dissolving two aspirin tablets, each containing 325 mg of acetylsalicylic acid, in 250 ml of water
What is the molarity of a solution that contains 464.3 grams of phosphoric acid, H3PO4, in 3.2 L of solution
Calculate how many mL of 0.100 M NaOH are needed to neutralize completely 26.0 mL of 0.0300 M acetic acid. 2) Calculate how many mL of 0.100 M NaOH are needed to neutralize completely 36.0 mL of 0.0400 M H2SO4 (forming Na2SO4 and water)
If the volume of an unknown liquid is measured and found to be 6.510 L, what is the volume of the unknown liquid in milliliters?
Describe how you will prepare a H2PO4-/HPO42- buffer using solid sodium dihydrogen phosphate and sodium hydrogen phosphate (pH 7.4, 500 mL 0.40M each). How much solid is needed to prepare each solution? How much volume of each of the solutions sho..
Calculate the specific heat of a metallic element if 314 joules of heat energy are needed to raise the temperature of a 50.0 gram sample from 25 degrees celsius to 50 degrees celsius.
How much alcohol must be burned to generate enough heat to warm 279kJ from 60 degrees fahrenheit to 180 degrees fahrenheit? Express answer in grams. Show entire process
You mix 1.0 mL of 0.50 M of Cu(NO3)2 with 6.0 mL of 0.50 KI, and collect the dry CuI precipitate. How many moles of CuI precipitate are expected from Cu(NO3)2
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