Harper touches a negatively charged plastic rod to a rubber ball. How are the negative charges distributed on the rubber ball? A They move to the bottom surface of the ball
B They stay on the surface where the rod touches the ball
c They are evenly distributed on the inside of the ball
OD They are evenly distributed on the surface of the bal

If a balloon is taken outside on a very cold day, what will occur?

The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.

When can a theory be modified if a new type of technology allows for new observations that raise new questions? a-immediately, while the questions about the theory are being asked b-after new hypotheses related to the theory are tested in experiments c-only after the new observations disprove all parts of the theory d-while scientists begin to think about how the theory could improve