About a year ago my best friend went to California and said he wasn’t coming back and he’s back and this was the day he came back

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease.correct answer for apex - a, its nonpolar end dissolves the grease.

What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? a) 6 b) 8 c) + 1 d) 12 e) 18