Using the empirical formula, calculate the formula weight of the compound. use the periodic table to you. type the correct answer in the box. round your answer to three decimal places.

Which traits do human embryos have that link them to a common ancestor with fish and reptiles? a. scales and tail b. gill slits and scales c. tail and gill slits d. hair and tail

Joseph has hypothesized that sound travels in waves. if he were following the scientific method, what should he do next? a. ask a question. b. test the hypothesis. c. study the results. d. tell other scientists about his hypothesis.

What does x represent in the formula for the compound xcl4?