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A protein subunit from an enzyme is part of a research study and needs to be characterized. A total of 0.180 g of this subunit was dissolved in enough water to produce 2.00 \rm mL of solution. At 28 ^\circ \rm C the osmotic pressure produced by the solution was 0.138 \rm atm. What is the molar mass of the protein?
A solution contains 0.010 M each Cu(NO3)2 and Bi(NO3)3. An equal portion of 12 M NH3 is added to the solution. What is the initial concentration of OH- (in M) once the two solutions have been mixed together, but prior to any reactions occurring? Th..
How many grams of 97% pure NaOH pellets do you need to make 1.000 liter of 1.5 NaOH
Consider the reaction: 2N2O(g) O2(g) + 2N2(g). Which of the following will cause a shift in the equilibrium to the right? 1. Add more N2O 2. Remove O2 3. Remove N2
Determine how many moles of Trisodium phosphate would be required to react with 4.0mol of Silver Nitrate?
A buffer solution is prepared by adding 32.8 grams of sodium acetate, NaC2H3O2 to 1.00 L of 0.500 M acetic acid, CH3CO2H. Ka = 1.8 x 10-5 for acetic acid.
A 15.00 mL sample of unknown concentration of sulfuric acid is precititated with excess lead(II) nitrate and a precipitate of lead(II) sulfate is collected.
determine the enthalpynbsp for the given reaction as cs2 l 2 o2 g rarr co2 g 2 so2 g if given cs o2g rarr co2g
what is the minimum number of kilojoules needed to change 40 grams of water 100 c to stem at the same temperature and
Calculate the amount of isopentyl acetate that should be present in the reaction mixture at equibrium, based on the quantities of starting materials you used and a value of 4.2 for the equilibrium constant
a) Catalyst works by lowering action barrier of rate limiting step. b) In a 1st order reaction, concentration of reactant is doubled then rate of reaction is doubled. c) equilibrium constant for reaction will never be affected by changing the concent..
An electron in the n2= 5 level of an H atom emits a photon of wavelength 1282.17 nm. To what energy does the electron move. Is the photon in the visible region
Determine the average atomic mass of helium, which has two isotopes having atomic masses 4.0026 amu and 3.0160 amu.The relative abundance of the two isotopes is 99.9999 percent and 0.0001 percent, respectively.
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