An unknown compound E204 is 30.45% by mass of E. E is a nonmetal. Which of the following statements about E204 are TRUE? I. E204 is a covalent compound II. Any sample of E204 has the same percent composition by mass III. When the element E reacts with a metal it gains electrons IV. Element E is nitrogen Select one: O a. I and II O b.I and III O C II O d. IV O e. All the statements are TRUE

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Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.