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You plan to marinate a piece of beef for your dinner. The beef is 5 by 6 inches with the thickness of 1 inch. You rub salt and pepper all around it, and set it aside for 30 minutes. Then you checked it after 30 minutes and found that the beef tastes salty at about 1/5 inch from the surface (Sorry, you still have not cooked it yet.Hope that you enjoy your raw beef).(a). What is approximately the diffusion constant of salt in beef (in terms of cm2/s).(b). But when you put the beef in a frying pan (about 370C) right after you put salt on and sear it for 30 minutes, you find the beef tastes salty at the middle already. What is the diffusion constant at this temperature?(c) Can you figure out the activation energy for salt diffusion in beef?(d) Explain why corned beef makers put beef into vacuumed chambers to marinate the beef?
if you dissolve the weighed mass of zinc in water which had not been deionized, how would the volume of EDTA required to reach the indicator end-point
An organic compound was prepared and purified by chromatography. A conductivity measurement showed the compound to be a nonelectrolyte
In aqueous solution, the hydrated radius of hemoglobin is found to be 3.55 nm. How many water molecules hydrate a hemoglobin molecule?
If a contemporary wooden chair were somehow preserved to for the next 3,900 years, what C-14 dacay rate should be expected from the wood used to make the chair? (t1/2 = 5730)
Determine the heat of combustion per gram of octane and the heat of combustion per mole of octane?
Would Br2 react faster with a tropylium cation or cyclooctatetrene? Not sure if the aromaticity of the cation comes into play here. Please justify your reasoning
Why is water added following a fischer esterification reaction? After forming an ester in lab we added water and an ether to our product
How much heat (in ) is required to warm 12.0 of ice, initially at -12.0, to steam at 114.0? The heat capacity of ice is 2.09 and that of steam is 2.01 .
If you wanted to make a 3 liter solution of 500 mM formic acid buffer at ph 3.9 how many grams each of sodium formate (MW=68g/mol) and formic acid (MW=46g/mol) would you add... 98.6 g sodium formate and 2.3g of formic acid or 20.2 sodium formate
A piece of Iron weighing 85.690 g was burned in the air. The mass of the iron oxide produced was 118.350 g. What are the moles of iron in the original sample. What is the mass of oxygen in the iron oxide. What is the moles of oxygen in the iron ox..
How many carbon atoms are present in the smallest ketone which cannot exhibit enol-keto tautomerism
A chilled carbonated beverage is opened and allowed to warm to room temperature. Will the pH change, and if so, how will it change. loss of CO2 from the beverage (Henry's Law) will result in a decrease in the pH
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