# 41.6: General Questions


1. A typical water bottle contains 16.9 mL of water, which is 16.9 grams of water.

1. Calculate the number of water bottles you would have if you had 3 dozen water bottles.

2. Calculate the mass of water you would have if you had 3 dozen water bottles.

3. Calculate the number of water molecules there would be in a single water bottle.

2. A water molecule ($$\ce{H2O}$$) contains two hydrogen atoms and one oxygen atom.

1. Calculate the mass of water in 3 moles of water.

2. Calculate the number of water molecules in 3 moles of water.

3. How many moles of carbon ($$\ce{C}$$) has the same mass as 6 moles of helium ($$\ce{He}$$)?

4. What mass of sodium ($$\ce{Na}$$) has the same number of atoms as 24 grams of carbon ($$\ce{C}$$)?