HELP ME PLEASEEE Serotonin (molar mass 176 g/mol) transmits nerve impulses between neurons. It contains 68.2%C, 6.86%H, 15.9% N and 9.08%O by mass. Determine the empirical formula of Serotonin and the molecular formula I

Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.