Sean drew this diagram and labeled an unknown gas a. which gas does a represent?

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?

Connect the whole numbers on the periodic table to indicate what they represent?

If i had 2 m naoh solution, what does the 2 m stand for? 2 molar, but 2 of a solute in 1