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The potassium-ion concentration in blood plasma is about 5.0 X 10-3M, whereas the concentration in muscle-cell fluid is much greater (0.15 M). The plasma and intracellular fluid are separated by the cell membrane, which we assume is permeable only to K+.
(a)What is ?G for the transfer of 1 mol of K+ from blood plasma to the cellular fluid at body temperature 37 °C?
(b) What is the minimum amount of work that must be used to transfer this K+?
The value of E° for each of the cells is 2.04 V. Suppose that in starting a car on a cold morning a current of 108 A is drawn for 14 seconds from the car battery. How many grams of Pb would be consumed? (M r(Pb)=207.19 g/mol)
Explain when coal is burned, the sulfur present in coal is converted to sulfur dioxide (SO2) which is in charge for the acid rain phenomenon.
The standard free energy of activation of one reaction A is 91.70 kJ mol (21.92 kcal mol). The standard free energy of activation of another reaction B is 74.50 kJ mol (17.81 kcal mol).
The normal boiling point for acetone is 56.5°C. At an elevation of 5300 ft the atmospheric pressure is 630. torr.
Part A. At 25°C, another student has the following data for the aluminum cylinder. The uncertainty in mA, mB, and mcyl is 0.001 g.
The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.253 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 26.9°C.
Answer the following questions, include an explanation, balanced chemical equations where appropriate. Calculate the concentration of NaOH solution. Include calculation for each trial and average.
the one in this module was performed to determine the solubility and the solubility product constant of Gallic acid
constant current of 101.0{\rm A} is passed through an electrolytic cell having an impure copper anode, a pure copper cathode, and an aqueous {\rm CuSO_4} electrolyte.
An application calls for N2(g) with a density of 1.80g/L at 32 degrees. What must be the pressure (atm) of the N2(g)?
1) How are the atoms arranged within nylon 6 molecular structure that leads to its strength, and explain the significance of the intermolecular forces which give it its high melting point? 2) Why is nylon 6 not a condensation polymer unlike most n..
The activation energy for the reaction NO 2 (g)+CO 2 (g)?NO(g)+CO(g) is E a = 100kJ/mol and the change in enthalpy for the reaction is ΔH = -200kJ/mol. What is the activation energy for the reverse reaction?
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