In class, students were given the following problem: "aluminum satellite dishes resist corrosion because aluminum reacts with oxygen gas to form a coating of aluminum oxide (al2o3). what is the mass of al2o3? "

a) sally solved the problem by first finding the molar mass of aluminum oxide. she calculated the molar mass of al2o3 as 43.0 g/mol. this is not the correct molar mass however. what did sally do wrong?

b) after finding the molar mass of al2o3, jacob set up the following conversion. (i'll add a pic)

is this the correct set up for the problem?

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.