In a hydrogen-oxygen fuel cell, a) no transfer of electrons occurs. b) both oxygen and hydrogen atoms lose electrons. c) both oxygen and hydrogen atoms gain electrons. d) oxygen atoms lose electrons and hydrogen atoms gain electrons. e) oxygen atoms gain electrons and hydrogen atoms lose electron

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

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.

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?