Can someone help me out please?Silicone has three naturally occurring isotopes. They have mass numbers of 28, 29, 30. If the atomic mass of silicone is 28.086, which is the most abundant? Explain

Jessica is traveling from miami, florida, to chicago, illinois. using the map, tell one way the land will change during the second half of her trip.

In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.