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The Earth receives approximately 2 x 1014 kJ/s of solar energy. What mass of solar material is converted into energy each second to produce this much energy
A 5.325g sample of methyl benzoate, a compound found in perfumes, was found to contain 3.758g of carbon, 0.316g of hydrogen, and 1.1251g of oxygen.
Oxalic acid crystals take place as H2C2O4*2H2O. Compute the concentration of oxalic acid in the solution in g/L. Titrated oxalic acid with sodium hydroxide giving the formula
Demonstrate that the operator G=id/dθ (partials) is Hermitian if θ spans the angularrange from 0 to 2π radians (integrate the integral by parts to show that it equals ).
What chemical symbol should be used for X in the following nuclear reaction? 237/93Np->233/91Pa+a/z X
Both the anode and the cathode are inert electorodes in a electrochemical cell. The liquid is molten potassium chloride, KCL. Determine whether this is a galvanic or an electrolytic cell and give teh reaction occuring at the anotde and teh raction..
The solubility of KNO3 is 155g per 100g of water at 75 degrees C and 38.0g at 25degrees C. What mass in grams of KNO3 will crystalize out of solution if exactly 100g of it's saturated solution at 75 degrees C is cooled to 25 degrees C?
Which of the changes listed below will shift the equilibrium to therightfor the following reversible reaction? C(s) + H2O(g)CO(g) + H2(g) + heat
Part (a) What is the wavelength, in meters, of these radio waves? Part (b) If the frequencies are swept over a ±4.5 MHz range centered on 100 MHz, what is the minimum, in meters, of the range of wavelengths emitted?
The buffer has a concentration of 150 mMol ( 150 mM of KH2PO4 / 150 mM K2HPO4. The pKa of the drug ephedrine is 9.6. Will the drug have a negative, positive, or neutral?
Problem- After 55.0 min, 35.0% of a compound has decomposed. What is the half-life of this reaction assuming first-order kinetics
List the activators and inhibitors of glycogen phosphorylase. How does phosphorylation affect its activity
the final pressure in atmospheres, when the fire extinguisher is used at a temperature of 85° C, if V and n are constant?
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