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The difference in pH between the internal as well as external surfaces of the inner mitochondrial membrane is 1.4 pH units (external side acidic). If the membrane potential is 0.06V inside negative, the free energy change on transporting 1 mol of protons across the membrane from outside to inside at 298K is -13.8 kJ/mol. Explain how many protons must be transported to provide sufficient free energy for the synthesis of 1 mol of ATP assuming standard biochemical conditions?
Two 20.0-g ice cubes at -16.0 °C are placed into 275 g of water at 25.0 °C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts.
Why does an atomic absorption instrument not need a high resolution monochromator, but an atomic emission instrument does
using the concepts of chemical kinetics explain why food kept in the refrigerator or freezer does not spoil as quickly
170mL of O2 gas is collected over water at 25 degrees C and the total pressure is 742 mm Hg. The vapor pressure of water is 23.8 mm Hg at this temperature. What would the volume of the dry gas be at STP? ( hint Daltons Law and Combination Law are ..
a 13.5 g piece of solid was heated to 98.8oc and dropped into a container with 45.0 g or water at 25oc. the final
The activation energy for the formation of HCl from its elements: H2 (g) + Cl2 (g) → 2 HCl(g) is 155 kJ mol-1. How much faster will this reaction occur at 200°C versus at 100°C?
Determine a dimension characteristic of a single aluminum atom. Compare your estimate value to the tabulated atomic radius for aluminum.
Calculate the molarity (mol/L) of Mn2+ when MnS is placed in a 0.0179 M (NH4)2S solution. The equation represents the solubility process.
Calculate the freezing point and boiling point of the solution. Constants may be found here. benzene C6H6 Kf = 5.12 *C/m Freezing Point = 5.49 *C Kb = 2.53 *C/m Normal boiling point = 80.1 *C
a 14.0 g sample of cacl2 is dissolved in 121 g of water with both substances at 25.0degc. calculate the final
Construct a Born-Haber cycle to compute the lattice enthalpy of TlCl, given the following data: sublimation of Tl(s):+182 KJ/mol
Sodium-24 has a half-life of 15.0 hours and is used to study blood circulation. If a patient is injected with 20.0 grams of Na-24 (usually done in the form of 24NaCl), how much is still present in the patient after 4.0 days?
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