Select each correct answer. More than one answer may be correct. Four atoms of hydrogen combine with one carbon atom to form CH4, but only two hydrogen atoms combine with one oxygen atom to form H2O. Which of the following helps to explain why? Hydrogen has one valence electron. Metallic bonds form between positively charged metal ions and delocalized electrons. Atoms may share electrons in order to fill their electron shells. Oxygen has two vacancies in its electron shell, but carbon has four vacancies.

What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?