In drawing a lewis structure each nonmetal atom except hydrogen should be surrounded by

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

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

Match each statement with the state of matter it describes