If a beaker has 4.61x10^19 molecules of water in it, how many grams of water would that be?

What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles

The atoms in a have a definite volume, but move quickly enough to overcome the forces of attraction between them. a. solid b. liquid c. gas

What is the pressure of 5.0 mol nitrogen gas in a 2.0 l container at 268 k (the universal gas constant is 0.0821 l•atm/mol•k) a. 55 atm b. 8.8 atm c. 0.018 atm d. 220 atm