In a resting cell at room temperature, sodium, potassium, and chloride ions exist with a permeability ratio of 1:0.04:0.45. a) What is the membrane potential of this cell if the ions are present at the below concentrations

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

What causes most sediment to wash or fall into a river