1. Clicker #1 What is the average mass of one hydrogen atom? A) 1.008 amu
B) g
C) moles
D) Both A and B are correct.

2. Clicker #2 How do these two numbers compare?
A) # of H atoms are less than the # of C atoms
B) # of H atoms are equal to the # of C atoms
C) # of H atoms are greater than the # of C atoms
D) I have no clue. Help!

3. Clicker #3 Which sample contains a greater number of atoms?
10.0 g Cu or 10.0 g Mg
A) 10.0 g Cu
B) 10.0 g Mg
(not completed in lecture but posted for reference)

4. Clicker #4 Which sample contains a greater number of atoms?
10.0 g Cu or 5.00 g Mg
A) 10.0 g Cu
B) 5.00 g Mg
(not completed in lecture but posted for reference)