This is the chemical formula for talc Mg3(Si2O5)2(OH)2(the main ingredient in talcum powder):
An analytical chemist has determined by measurements that there are 0.055 moles of magnesium in a sample of talc. How many moles of oxygen are in the sample?

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?