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Construct duplicate 1/10 dilutions of p-nitro phenol in your phosphate buffer by mixing the 0.5 ml of 0.5 m M p-nitro phenol with 4.5ml of your 0.1 KPB, pH 7.4. Determine the final concentr
Determine the degrees of un-saturation of chlorophyll and B-carotene? Why are these pigments unstable in the presence of light or heat energy and which of the two pigments is more non-polar and why
Explain is there a chemical reaction involved in chromatography (specifically column chromatography or TLC)? Or is it just a physical separation?
The equilibrium constant for the reaction Ni(s) + 4CO (g) ↔ Ni(CO)4 (g) is 5.0 x 104 at 25degrees. Determine the equilibrium constant for the reaction
Determine how many times greater is the H3O+ concentration in diet cola than in milk? Diet cola drinks have a pH of about 3.0, while milk has a pH of about 7.0.
What happened to the moth balls? Calculate the melting point of the substance? Demonstrate a graph illustrating its phase changes if the woolen clothing was placed in a closed chest along with some
Determine the magnetic dipole moment that you would expect for each of the following nuclei: 153 Eu, 137 Cs, 19 F, 37 Cl, 51 V, and 93Nb. For each of the first three nuclei, J = l-1/2; for the last
What possible values exist for the total nuclear angular momentum quantum number (I) of the7Li2 molecule? The spin of the 7 Li nucleus is 3/2.
Determine the value of Henry's Law constant in mol/L atm when the solubility of nitrogen gas at 25 degrees C and a nitrogen pressure of 522 mmHg is 4.7 x 10-4 mol/L.
How many moles of oxygen are lost when a cylinder with a movable piston records a volume of 12.6L when 3.0 mol of oxygen is added? The gas in the cylinder has a pressure of 5.83 atm.
Estimate the number of pipes necessary to achieve 99.9%conversion of cyclohexane from an entering gas stream of 95% hydrogen and 5% cyclohexane at the 2 atm and 5000C.
Determine the percent by mass of water in copper (II) sulphate pent hydrate, CuSO4 (5H20) and what mass due to waters of crystallization is present in a50.0 g sample of CuSO4 (5H20)
Half a cup (approximately 120mL) of ethynlalcohol, C2H5OH, (d=0.789 g/mL) is poured into a soft drink bottle at room temperature.
At 755mm Hg and 25C it has a density of 1.71g/L. Cyclo propane mixed in the proper ratio with oxygen can be used as an anesthetic.
When 1.00g germanite as treated this way, the germanium presented was totally converted into the 0.177g of a chloride which is having 33.9% by mass of germanium. Determine the percentage of germaniu
Suppose that the partition coefficient, K, for portioning of compound A among the diethyl ether and water is 3; that is, A preferentially partitions into ether.
Supply a flowchart for separating a diethyl ether solution containing anthracites, benzoic acid, 2-naphthol, and 4-nitroaniline. All compounds are solids when pure.
Calculate the mass in grams of acid to be used if the volume of NaOH to be used is 25 mL when a sample of solid monoprotic acid with molar mass equal to 159.2g/mol was titrated with the 0
The combustion of 0.6654 g of an organic compound with a molecular mass of 46.07 amu causes the temperature in the calorimeter to rise from 25.000oC to 30.589 oC in a constant volume bomb calor
Would you expect a beam of protons accelerated through the same potential to be diffracted when it strikes the film of gold? Electrons accelerated through a certain potential are diffracted by a thi
Discuss why ammonia has 2 C_3 axes? The symmetry elements for ammonia are 2C_3, 3 sigma_v. Does that mean ammonia has 2 C_3axes?
Explain how many seconds would it take for the reaction to be 90% complete when a certain reaction A→ products is second order in A. If this reaction is 10% complete after 20. S.
What is the empirical formula of aspartame if aspartame is an artificial sweetener that is found to be 57.14% carbon, 6.16% hydrogen, 9.52% nitrogen, and 27.18% oxygen?
C6H5COOH (aq) +CH3COO- (aq) ↔C6H5COO- (aq) +CH3COOH (aq) is 3.6 at 25 degrees C. If Ka forCH3COOH is 1.8 x 10-5, determine the acid dissociation constant for C6H5COOH?
At this temperature, the methanol vaporizes and decomposes according to the reaction, a quantity of liquid methanol, CH3OH, is introduced into a rigid 3.00-L vessel, the vessel is sealed, and the temp