Acertain single ion channel is selectively permeable to k+ and has a resistance of 1.15 gω , therefore a current of potassium ions through the channel is possible. during an experiment, the channel is open for approximately 1.50 ms while the voltage across the channel is maintained at 81.5 mv . how many k+ ions travel through the channel during this time?

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c

Contains chemical energy. a. heat b. light c. natural gas

State the below theories and give the name of the writer of the theory 1. wave theory 2. quantum theory 3. corpuscular theory 4. electromagnetic theory