A compound consists of carbon and hydrogen. The molecular mass of the compound is 44.1g. The percent by mass if 81.71%C and 18.29%H. What is the empirical and molecular formula?

Four statements about the development of the atomic model are shown below. a: electrons have wavelike properties. b: atoms have small, negatively charged particles. c. the center of an atom is a small, dense nucleus. d: atoms are hard, indivisible spheres. which order of statements represents the historical development of the atomic model? c-d-a-b c-d-b-a d— в-а — с d-b-c-a