There are 16 cups in a gallon. Thus, one gallon of whole milk has 128 grams of fat.
A gallon and half of water is 5,676 grams
There are 3785.41 grams in one US gallon
That is 3,628.739 grams.
That depends on what substance, if any, is in the gallon. If the gallon is empty, then the mass in it is zero grams.
1820 grams in a British gallon.
199 580.643 grams
4 whole qt
.21 pounds per US gallon is about 25.163 grams per liter.
About 2-3 whole bulbs
"Gram" is a mass. "Gallon" is a volume of space. The number of grams of mass in 1.03 gallons of space depends on what substance you poured in there. If the gallon is empty, then there are no grams of mass at all in it.
None, since there can be no conversion. A gram is a measure of mass. A gallon is a measure of volume. The two measure different things and, according to basic principles of dimensional analysis, conversion from one to the other is not valid. If you are not convinced, consider a gallon of air. How many grams? Next consider the same volume of lead. How many grams?
Explain what is "cubs"