Which of the following does not represent energy being converted? * 8 points
stretching a rubber band then letting it go
dropping a ball
playing with a yo-yo
a book sitting on a desk
Other:

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

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? (2 points) decreasing temperature decreasing pressure decreasing surface area decreasing solute concentration