If 12.0 grams of H2 has a volume of 20.0 L, what is the volume of 66.0 grams of CO2 gas at constant pressure and temperature?

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

The is a particle with one unit of positive charge a. proton b. positron c. electron d. nucleus awnser quick it is a important science test!