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An average man requires about 2.00mg of vitamin B2 per day. How many pounds of cheese would a man have to eat per day if this washis only source of vitamin B2 and if the cheese contained 5.5μg(micro-gram)of vitamin B2 per gram
Calculate the lattice energy (kJ/mol) of the hypothetical ionic compound MX2 from the information given below. IE1+ IE2 (M) = 1,487 kJ/mol M(s)
Assuming a soap to be pure sodium stearate, give an equation for it's reaction with Ca2+ in hard water.
A saturated solution of magnesium hydroxide in equilibrium with undissolved solid is prepared at 25 degree celcius. The pH of the solution is 11.03. Calculate the value of the Ksp
What type of HPLC column and detector could be used to separate and detect benzaldehyde and 4-hydroxymethylbenzaldehyde?
A hydrogen atom initially in the n=6 quantum state emits a photon having a wavelength of 1.09352E-6 m. What is the quantum number of the final state of the atom
If a system has 225 kcal of work done to it, and releases 5.00 x 10^2 kJ of heat into its surroundings, what is the change in internal energy of the system
a bottle containing 305 g of cleaning solution is used for carpets. if the cleaning solution has a specific gravity of
How many grams of dry NH4Cl need to be added to 1.50 L of a 0.500 M solution of ammonia, NH3,to prepare a buffer solution that has a pH of 8.79. Kb for ammonia is 1.8*10^-5.
What are the concentrations of all of the following ions at the equivalecne point: Na+, H3O+, OH-, and C5H5CO2-. What is the pH of the solution at the equivalence point
For a particular reaction the hydroxide ion is one of the reactants. Doubling the concentration of the hydroxide ion, while holding all the other concentrations constant, changes the rate of the reaction from 0.002 to 0.008. what is the order with..
Why is sodium hydroxide added to the solution of thiamine hydrochloride
Draw the oxygen dissociation curves for myoglobin and hemoglobin on the same graph. lable axes, give units and provide key values. Concisely interpet and explain the 2 curves in terms of the specific structure and function of the two molecules.
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