How many subshells are there in the n = 4 principal shell? how many subshells are there in the n = 4 principal shell? 1 2 3 4 not enough information?

What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?

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

Label a-f based on the table using c for concentrated and d for dilute