If you had two balloons, one filled with helium and one filled with sulfur hexafluoride, what would the balloons do when you released them?

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has:

The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?