How do we describe noble gases? A.. they have a full outer shell and unstable. B... they have a full outer shell and are stable. C.. their outer shell isn’t full and they are unstable. D... their outer shell isn’t full and they are stable.

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg

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?

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.