Which of the following are not molecules?

A. MgCl₂

B. C₃H₈

C. Al

D. NaCl

E. Ag

An object has a volume of 2 milliliters and a mass of 10 grams, calculate the density of the object

1. In what year did the modern version of the metric system get accepted for use

Who was the first person known to have used the terms genus and species when classifying organisms? A) Dalton B) Aristotle C) Linnaeus D) Democritus

Which group tends to have the highest ionization energy? The lowest? a) Halogens; Alkaline earth metals b) Alkali metals; Noble gases c) Noble gases; Alkali metals

Which of the following statements about resonance are correct? Which of the following statements about resonance are correct? Atoms can move between different resonance structures.

You place a book on your desk, and then you begin to lift one edge of the desk. You make the following observations: At first the book does not move. When you lift the desk edge higher, the book begins to slide slowly.

Oxidation-reduction is often the most confusing and abstract part of chemistry for first-time chemistry students. Is it really worth the trouble? Think about the various chemical reactions that impact your life and society daily.

at 25c, 13.0 mg of co dissolves in 500g of water when the partial pressure of co is 0.968 bar. what is the henry's law constant for co at this temperature

In which of the following substances can a lipid NOT dissolve?

Balance these scientific equations: MgO + HB - > MgBr2 + H2O N2 + O2 - > N2O5 C2H4 + O2 - > CO2 + H2O Fe + HCI - > FeCl2 + H2