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A 3.30-g sample of an enzyme is used to make a 4.00-mL solution. What is the molar mass of the enzyme if the osmotic pressure of the solution at 298K is 0.129 atm? Note that enzymes are nonelectrolytes.
A gas is heated from 14 degrees celsius to 121 degrees celsius and the volume increased from 15.0 liters to 41.4 liters. If the original pressure is 1 atm, what would the final pressure be?
what effect does the presence of sodium sulfite group on methyl orange have on the solubility of methyl orange in water. If this group were absent, would you expect the solubility of the resulting molecule to be more or less soluble in hexane than..
Calculate the mass of one oxygen atom and determine the number of oxygen atoms in a 10.00g sample of the element.
The titration required 20.34 mL of 0.0491 M thiosulfate solution. Calculate the weight percent of ascorbic acid in a tablet of Vitamin C.
How much heat is required to vaporize 18.5g of water at 100c. The heat of vaporization of water at 100c is 40.7kj/mole.
There are four possible p orbital arrangements for the butadiene molecule. Which of the following statements about these orbitals is not correct? A) The four arrangements differ by the number of anti-bonding interfaces in each arrangement.
D2O with a mass concentration of 80 mg/cm3 in a 0.10-mm-long absorption cell is found to have a transmittance of 8.3% for infrared radiation of wavelength 6000 nm. Find the absorbance of the solution and the molar absorption coefficient of lysozym..
Given the following equation, how many grams of PbCO3 will dissolve when 1.5L of 1.00 M H+ is added to 6.00g of PbCO3? PbCO3(s) + 2H+(aq) = Pb^2(aq)+ +H2O (l)+ CO2(g)
160 mL that contains 400 mg of NH3 and 980 mg of NH4NO3. (Given: Kb (NH3) = 1.8 x 10-5
From the understanding of colligative properties, how would I design an experiment to measure the freezing point of a material which freezed at -2'c using the same apparatus used in the laboratory and any chemical reagents commonly found in a chemi..
What is the average current passing through a solution of NiSO4 if 1.25 g of Ni were deposited in 4.07 hours? i = A
At equilibrium, it was found that [CH3COOH] = 0.8537 M, [CH3COOO-] = 0.0040 M and [H3O+] = 0.0040 M. Calculate the acidity constant of CH3COOH and the pH value of the solution.
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