The gas constant, R, is derived from substituting 1 mole at STP into which equation? A Boyle's Law
B Charles' Law
C Avogadro's Law
D Ideal Gas Law

Describe what happens to the molecules as water goes from ice to liquid to vapor. be sure to explain what happens to the temperature during the phase changes.

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth

Why can water dissolve many ionic compounds