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If a solution of glucose 1-phosphate is incubated with acatalytic amount of phosphoglucomutase, the glucose 1-phosphate istransformed to glucose 6-phosphate.
A 25 mL sample containing Cu2+ gave an instrumentsignal of 23.6 units (corrected for a blank). When exactly 0.5 mLof 0.0287 M Cu(NO3)2 was added to the solution, the signal increased to 37.9 units.
A geochemist is interested in studying the extent of ocean dilution of trace components due to melting glaciers. If normal seawater has a pCa2+ of 5.611 and the projected effects of melting glaciers
Calculate the quantities of reagents needed to prepare 1.0 L ofdisodium arginine-sodium arginine buffer solution at a pH of 4.5.You are given DI water, disodium arginine and sodium hydroxidesalts.
Experimental data indicates that 0.12 moles of glycerol are form edfor each mole of ethanol produced and that 0.08 moles of water are formed for each mole of glycerol.
Calculate the standard free energy change for the following metabolically important enzyme-catalyzed reaction at 25°C andpH 7 using the indicated equilibrium constant: glyceraldehyde 3-phosphate
TheΔH and ΔS for the the reaction catalyzed by argininekinase were determined to be -8.2 kJ/mol and 2.2 J/K/mol,respectively, at 37° C. What is the ΔG? Comment on whether &Delt
A sample of a compound has the following percentcomposition: 40% C, 6.67% H, and 53.3% O. Determine the empirical formula, andgiven a molecular mass of 180g, give the molecular formula.
which of the phases of benzene, solid or liquid, is the morestabel phase at 10 c (celsius)? At what temperature are solid,liquid, and vapor all in equilibrium?
The class of ternary compounds called carboranes (containing the elements carbon, boron andhydrogen) have played a prominent role in many areas of fundamental chemical research.
If the initial concentration of AB is 0.260 M, and thereaction mixture initially contains no products, what are the concentrations of A and B after 70 s?
Canadian 10¢ and 25¢ coins are made of pure nickel which has a density of 8.902 g/cm3. Suppose each dime weighs 2.14 g and each quarter weighs 5.35 g.
In a portable oxygen system, the oxygen (O2) iscontained in a cylinder whose volume is 0.00250 m3. Afull cylinder has an absolute pressure of 1.20 x107 Pa when the temperature is 298 K.
The ionization energies of sodium (in kJ/mol), starting withthe first and ending with the eleventh, are 495.9, 4560, 6900,9540, 13,400, 16,600, 20,120, 25,490, 28,930, 141,360, 170,000.
In 1996 physicists created an anti-atom of hydrogen. In such an atom, which is the antimatter equivalent of an ordinary atom, the electrical charges of all the component particles are reversed.
When balancing redox reactions that occur in acidicsolutions. The redox reactions of silver halides are used to:
A compounds analyzes to be 61.7% Cl, 26.72% P, and 12.11% N. 1.2952 g of the compound was dissolved in 15.00 ml of benzene (density of benzene=.879 g/ml). Producing a solution freezing at 4.03 degre
Calculate the volume of 6 MNaOH necessary to react completely with 10.0 mmol of methylsalicylate. How much of the 6 M NaOH that you will use is in excess of the theoretical amount? Why do we use so
A 28.2 g sample of nickel metal is heated to 99.8 degrees Celsiusand place in a coffee-cup calorimeter containing 150.0 g of waterat 23.5 degrees Celsius. After the metal cools, the final temperatur
If you dissolve caffeine in acid a proton goes onto one of thenitrogens to give the conjugate acid of caffeine,caffeineH+ . The acid dissociation costant(Ka) of caffeineH+ is Ka =0.26M.
Like the reaction of aldehydes with water to give aldehydehydrates, ketones react with water to give ketone hydrates. Why are ketones not oxidized further even in the presence of water?
How do you solve this question? An ice cube has the dimensions of 5.80centimeters by 5.80 centimeters by 5.80 centimeters and has a density of .917 grams per milliliter. Determine the mass of the i
A sample of calcium hydroxide is placed into a jar containing water. The mass of the calcium hydroxide same is 1.34g. Assume the water is at 20 degrees C and that the resulting calcium hydroxide sol
The heat of vaporization of a liquid (ΔHvap) is theenergy required to vaporize 1g of the liquid at its boiling point. In one experiment, 60g of liquid nitrogen (boilingpoint -196 degrees Celci
When aluminum combines with chlorine gas, theyproduce the substance aluminum choride. If 4.94 g of aluminumchloride is formed from 1.00 g of aluminum, how many grams ofchlorine will combine with 6.2