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In the conduction equation Q = (kA T)t/L, the combination of factors kA/L is called the conductance. The human body has the ability to vary the conductance of the tissue beneath the skin by means of vasoconstriction and vasodilation, in which the flow of blood to the veins and capillaries underlying the skin is decreased and increased, respectively. The conductance can be adjusted over a range such that the tissue beneath the skin is equivalent to a thickness of 0.080 mm of Styrofoam or 3.5 mm of air. By what factor can the body adjust the conductance? Express your answer as a number greater than one with no units.
A chemist wanted to determine the concentration of a solution of lactic acid, HC3H5O3. She found that the pH of the solution was 2.59. What was the concentration of the solution.
What property of the atom did Moseley associate with the wavelength of X-rays emitted from an element in his experiments?
A dioxin-contaminated water source contains 0.081% dioxin by mass. How much dioxin is present in 4.2 L of this water? (Assume that the density of the solution is 1.01 g/mL.)
Calculate the heat released when 72.0g of steam at 131C is converted to water at 44.0C. Assume that the specific heat of water is 4.184J/gC, the specific heat of steam is 1.99J/gC and delta H of vaporization is 40.79kJ/mol for water.
What is the final temperature when 150 mL of water at 90,0 C is added to 100.0 mL of water
Explain what is the net charge of this peptide at pH 6 and how. Glutamic acid-Leucine-Histidine-Arginine-Asparagine-Threonine-Aspartic acid
What is the pH of a solution that is known to be 5.58 M in H3PO4. What would be the approximate concentration of PO43-(aq) in that solution
A 4.00 solution of was prepared using 1.00 of water at 25.0 . Once the solid had all dissolved, the temperature of the solution was 12.3 . Calculate the heat of solution, , of . Assume that the specific heat of the solution is identical to that of..
Outline the changes that happen to the following groups or interactions in hemoglobin when oxygen binds todeoxyhemoglobin.
How many moles of an ideal gas would occupy a 25.0 liter container when the temperature is 22.0° C and the pressure is 646 torr?
A student has a flask filled with 0.385 grams of a gas at 26.2 Celsius and 1.01 atm. The flask has a volume of 138.2 mL
Calculate the number of moles of BA(OH)2 that will react with 0.600 mol of H3PO4 to form BA(H2PO4)2
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