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A 2g sample of a large biomolecule was dissolved in 15g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85 C. Calculate the molar mass of the biomolecule. For carbon tetrachloride, the boiling-point constant is 5.03 C x kg/mol, and the boiling point of pure carbon tetrachloride is 76.50 C.
What happens to the pattern if we try to determine which slit the electron goes through by using a laser placed directly behind the slits
Following the instruction for the standardization of sodium hydroxide a student took 3.5 gms of KHP (MWt 204.2g/mol) and titrated the solution formed with the given sodium hydroxide solution.
A pound of coffee beans yields 30 cups of coffee (4 cups = 1 q). How many milliliters of coffee can be obtained from 1 g of coffee beans.
how much current is produced by the dissolution of .525 g of chromium per hour to produce chromium (III)?
The triprotic acid H3A has ionization constants of Ka1 = 7.5× 10-2, Ka2 = 7.8× 10-9, and Ka3 = 6.9× 10-12. Calculate the following values for a 0.0580 M solution of NaH2A Calculate the following values for a 0.0580 M solution of Na2HA.
What is the mole fraction of water in this solution? What is the vapor pressure of the solution at 25 degrees Celsius, given the vapor pressure of pure water at 25 degrees Celsius is 23.8torr
How many hours will it take to produce 61.0 kg of Al metal by the reduction of Al3+ in an electrolytic cell using a current of 484 amps?
Calculate the pH at the equivalence point for the titration of 0.170 M methylamine (CH3NH2) with 0.170 M HCl. The Kb of methylamine is 5.0× 10-4.
what volume of vinegar would be needed to react with 18.00 grams of baking soda? Assume the density of vinegar is the same as that of water.
A particular element M has a heat capacity of 0.36 JgK and it forms an oxide that contains 2.9 grams of M per gram of oxygen What is the molar mass of the metal
A green leaf has a surface area of 2.10 cm^2. If solar radiation is 1150 W/m^2, how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
determined its current level of YAN to be 120 ppm N. If each gram of DAP adds 0.21 gram of N to the must, how much DAP is needed?
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