Which of the following objects is not a part of our solar system? a. the north star b. the dwarf planet pluto c. the asteroid belt d. jupiter’s moons

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?

What is the mass of 8 moles of sodium atoms

A50.0 ml sample of gas at 20.0 atm of pressure is compressed to 40.0 atm of pressure at constant temperature. what is the new volume? 0.0100 ml 0.325 ml 25.0 ml 100. ml