35) at the county fair, carrie and sam climbed up on the carousel horses. around and around they went; the horses also bobbed up and down. when they got off of the carousel, carrie told sam they had been accelerating during their ride. sam disagreed; they had been moving at a constant speed. whose response is fully correct, and why?

a) carrie is, because the carousel changed speed when it started and stopped.
b) sam is, because the horses never moved from their position on the carousel.
c) carrie is, because velocity includes speed plus direction, and both changed.
d) sam is, they did not accelerate since their speed remained constant for the ride.

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

These questions are based on the attached photo. the experiment is about burning magnesium metal with oxygen. 1. write the balanced chemical equation for the reaction you are performing. 2. calculate the mass of magnesium metal used in each trial. o trial 1: o trial 2: 3. calculate the actual yield of magnesium oxide for each trial. o trial 1: o trial 2: 4. magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. o trial 1: o trial 2: 5. determine the percent yield of mgo for your experiment for each trial. o trial 1: o trial 2: 6. determine the average percent yield of mgo for the two trials. your company currently uses a process with a similar cost of materials that has an average percent yield of 91 percent. if the average percent yield of this process is higher than that, this could save the company money. what is your recommendation to the company? support your recommendation using your data, calculations, and understanding of stoichiometry gathered from this lab.