Researchers want to determine the best temperatures for storing batteries. describe a possible experiment and list the variables to be controlled in the experiment. be sure to identify the manipulated and the responding variables.

1) how many electrons are in each energy level of the following elements? a. he b. na c. na d. ne 2) how many valence electrons are percent in the following atoms? a. s b. mg c. be d. cl 3) which of the following elements are stable as atoms? a. he b. o c. cl d. ar if you are able to provide the work as to how you got the answers that would be greatly appreciated. : )

Which substances have the lowest melting points: ionic covalent, or metallic

Water (2510 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?