The adult blue whale has a lung capacity of 5.0×103L. Calculate the mass of air (assume an average molar mass 28.98 g/mol) contained in an adult blue whale’s lungs at 0.3 ∘C and 1.01 atm , assuming the air behaves ideally.

answer; ///i believe the correct answer is (aids) acquired immune deficiency syndrome;

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

read more on -