Please help!! How many moles of NO2 are equivalent to 74.3 grams of NO2?
(N = 14.01 g/mol, O = 16.00 g/mol)

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

Define dew point. i am writing this part to be able to ask the question

Describe the forces both attractive and repulsive that occur as two atoms move closer together.