Most physical and chemical changes in matter include a change of energy true or false

If a planet rotates 360 degrees during a 24 hour time period, what does that tell us about the planet? a. the middle of the planet is in darkness b. the seasons on the planet vary every day. c. the planet runs on a 12-hour time clock. d. the temperature on the planet varies daily.

What is the mass of 4 molecules of co2

How many moles are contained in 5.6 l of h2 at stp