True or False: The atomic masses of the elements are not whole values because of quarks.

How many moles in 65.5 grams of chlorine

Concentrated hydrochloric acid has a molarity of 6.0 M. How many mL of HCI must be used to make 500.0 mL of 2.0 M Hydrochloric acid?

3) Which has the smallest atomic radius Li, F, Rb, I? it should F. but my professor said it was Li. which is the correct answer

How is mass described?

A balanced chemical equation allows one to determine the

As a sample of the radioactive isotope 131I decays, its half-life (1) decreases (2) increases (3) remains the same

How many Joules of energy are required to change 10.0 gram of ice at - 2.0 C to water at 20.0 C? (use your constants) 440 J 66,000 J 880 4220 J

Why are Van der Waals forces important? A) They determine how strong dipole moments will be in polar covalent molecules B) They are the strongest type of intermolecular force that can act on polar and non-polar molecules C) They are primary

When heat is added to or removed from a substance, it may change its state. What state will most likely result if heat is added to a liquid?

Chemical Reactions Lab Procedures: 1. Place a 1cm long piece of white chalk in a clear plastic cup. 2. Add 5 mL of vinegar to the cup. 3. Record your observations. If you were performing the procedures above you would need to A.