To find out how many molecules you have, you need to multiply the number of moles with Avogadros constant: 2.50 * 6.022 * 10²³ = 1.5055 * 10^24.
According to my brain the answer is natural gas
The best name for NO3 is Nitrogen Trioxide, it is very aggressive and corrosive. Hope this helped! Brainliest is always appreciated!
Mass number is
protons + nuetrons
So,
7 + 8 = 15
——-
Atomic number is the number of protons
so,
7