The density of a pure substance is its mass per unit volume. The density of ethylene glycol has been measured to be . Calculate the mass of of ethylene glycol. Be sure your answer has a unit symbol and the correct number of significant digits. Solution:

Why is the structure of molecule important to its function?

Define a is a tiny pavket of energy

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?