At 286 K, three gases, A, B, and C, have root-mean-square speeds of 360 m/s, 441 m/s,
and 472 m/s, respectively. Which gas is O2?

Asmall amount of a solid is added to water. the observation made after fifteen minutes is shown in the figure. which of these solids has been probably added to water? a) oil b) sand c) sugar d) wood chips

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

If two objects at different te,peraure are in contact with each other what happens to their temperature