The question, as stated, cannot be answered sensibly. A quart is a measure of volume, with dimensions [L3]. A gram is a measure of mass, with dimensions [M]. The two measure different things and elementary dimensional analysis teaches that you cannot convert between measures with different dimensions such as these without additional information.
As a simple mental exercise consider a quart of air and of water. They will have very different masses.
Twelve, exactly.
6 quarts!
12 quarts equal 3 gallons
1 gallons = 4 quarts ⇒ 12 quarts = 12 ÷ 4 gallons = 3 gallons
48.
111.710136
6
Since 4 quarts equals 1 gallon, therefore 12 quarts equals 3 gallons.
(12 quarts) / (4 quarts per gallon) = 3 gallons
12 pts
12 quarts
3 gallons