40 POINTS!! Choose all the answers that apply. Light .

travels in longitudinal waves
does not require a medium to travel through
slows down when traveling through more dense substances
speeds up when traveling through less dense substances
can be absorbed and transformed into heat
is refracted when it changes direction and speed

What is the formula that this ionic compounds could form sr2+p3-o2-

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

56.16 gregor mendel was the first scientist to use statistics to analyze scientific data. before mendel's experiments, scientists believed that organisms acquired traits from their environment and passed them on to their offspring. after mendel's discoveries were accepted, scientists realized that traits passed to offspring were the result of genes being passed from parents to offspring. this is an example of pls