For the following compound: aluminum phosphide, what is the charge of the second atom?.

Which term refers to a property that depends only on the amount of a substance? ©@

Calculate the number of moles of ethane in 100 grams

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?