CHM242H5 Final: Past exam questions - good for the December test for CHEM140!

Question 7 (of 7) 7. value: 10.00 points What does it mean to equilibrate the water level inside and outside of the flask in part 6 O the water inside the flask has to be the same amount as outside the flask O the water outside the fiask has to be the same amount as inside the flask O the water inside the flask should be the same level as out side the flask to have equal pressures

Answer questions 9-11 using the following: A transporter protein transports Ca2* ions across a membrane at 37 °C in a cell in which the membrane potential is 100 mV (inside of the cell is negative relative to the outside) and the Ca2+ ion concentrations are 150 mM inside and 15 mM outside. 9. (4 pts.) What is the ΔG when transporting 2 Ca2+ from the inside to the outside of the cell? 10.4 pts.) What is the AG when transporting 2 Ca2 from the outside of the cell to the inside of the cell? A. +7.2 kJ/mol B. +5.9 kJ/mol C. +19.0 kJ/mol D. +9.5 kJ/mol E.+26.2 kJ/mol A. +5.9 kJ/mol B. -26.2 kJ/mol D.-7.2 kJ/mol E. -13.1 kJ/mol C.-9.5 kJ/mol