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The protein has a MW of 35,000. One is interested in determining the affinity of P for leonine. An amino acid binding protein (P) is released from E. coli by the osmotic shock, and purified to homog
Determine the numbers of times can you divide evenly a piece of 10 cm copper wire until it is reduces to two separate copper atoms if the diameter of a copper (Cu) atom is roughly 1,3*10-10m.
Determine the numbers of moles of H2SO4 are required to make the 855 grams of K2SO4 by using the equation
A sample is composed of a mixture of CuSO4 and CaCO3· 5H2O. A chemist decided to calculate the mixture by dehydrating it by heating it to 120° for12 hours. If a 5.327 g sample weighed 4.2
When solid sodium hydrogen sulfite, NaHSO3, is heated, sulfur dioxide gas, SO2; solid sodium sulfite, Na2SO3; and the water vapor are produced.
Zinc added to 50ml of a .100 M AgNO3, constant pressure calorimeter. Temperature rises from 19.25 C to 22.17C, the Heat capacity of calorimeter = 98.6 J/C. Determine the enthalpy change (delta H) fo
Write down a reaction to account for what is happening.Discuss is the bisulfate ion acting as an oxidizing or redacting agent?
Determine the numbers of spectator ions are present in the metathesis reaction in which the silver (I) acetate reacts with nitric acid to produce the silver(I) nitrate and the acetic acid?
At a point downstream, the air flows through a 5.00cm ID pipe at 60 degrees Celsius and 1.53 bars (gauge). A stream of air enters a 7.50-cm ID pipe at a velocity of 60 m/s at 27 degrees Cel
An aliquot of a nitric acid solution which is having 25.0 mL of unknown concentration is pipette into a 125 mL flask, and 2 drops of phenolphthalein are added.
Write down a thermodynamic equilibrium constant expression to represent the reaction of solid lead (II) sulfide with aqueous nitric acid to form the solid sulfur, a solution of nitrogen monoxide and
Discuss how much heat would be needed to change the temperature of 150g water from the 25C to 75C? Explain what volume of mercury which is having the density 13.6g/cm3 will have 0.0375kg? (go to 2 dec
Explain what state of a) benzene and b) naphthalene may be reached by the electric dipole transitions from their (totally symmetrical) ground state?
Determine the average mass percent of oxygen in potassium chlorate using your two experimental values. Is it lower than either of your individual experiments How well do your experimental results ma
Determine the numbers of mL of 1M CuSO4 is required for 1g Zn to completely react based on the equation : Zn(s) +CuSO4(aq) --> Cu(s) +ZnSO4(aq)
Explain how much calcium would be needed to make 15.0g of calcium oxide if the calcium oxide can be prepared by heating calcium metal in oxygen.
A 2.0-L vessel contains the 4.65g of a gas at 1.00 atm and 27.0 degree C. Determine the density of the gas in grams per liter. Determine the molar mass of the gas?
Determine the concentration of Ca+2 and CO3-2 at equilibrium. Determine the equilibrium constant for the dissolution reaction.
Determine the numbers of electrons will aluminum gain or lose when it forms an ion? Write down a concise paragraph explaining what is meant by the "diagonal effect" and explain how it can be acco
Hydrogen gas,H2(g) and the Carbon dioxide gas, CO2 (g), are brought together in a vessel and heated to1565oC. At this temperature they react to produce the water, H2O(g) and the carbon monoxid
The combustion analysis of toluene, a common organic solvent, forms the 0.00137g of H2O and 0.00586g of CO2. If the compound contains only hydrogen and carbon, determine the molecular formula when the
Explain why is it important to fill the burette with the NaOH solution before performing a acid/base titration, and discuss what effect does that have on the determination of the Ka of the acid?
What is the final temperature when 121 mL water at the 30.°C is mixed with 63 mL water at the 84°C? Assume that no heat is lost to the surroundings and that the density of water is 1.00 g/m
Explain how long would it take in seconds to increase the temperature of the water from 12.0oC to41.5oC when a bowl of 345 g of water is placed in a microwave oven that puts out the 766 watts (J/s).
Assuming no heat is lost to the surroundings, what is the temperature of the water and the metal? 40grams of a certain metal at 98 degrees Celsius was placed into the 80mL of water at 297K.