Water molecules stick to nearby water molecules due to

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?

‘which reaction would most likely require the use of an inert electrode?

How many moles of lead are in 1.50 x 10^12 atoms of lead? could you explain the answer as well and not just give it to me i am refreshing for finals and i need to know how to do it