A softball travels 30m in 3s. What is the speed of the car?

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

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

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li