How many grams are in one fluid ounce?

Answer 1

Incorrect Answer:

There are 177 grams in one fluid ounce of water. However, fluid ounces is a measure of volume and grams is a measure of mass (weight), so the answer is dependent on the density of the material in question. Oil, for example, is less dense than water and, depending on the type of oil, would be less than 177 grams.

Reasoning:

One pound is approximately 454 grams. If one fluid ounce of water is 177 grams, that would equal about 0.39 pounds per fluid ounce. As there are 128 fluid ounces in a gallon, by those calculations a gallon would weigh just under 50 pounds. If, instead, we assume a gallon weighs only 8 pounds, then one fluid ounce of water would weigh about 28-29 grams.

The part about density is accurate.

that is absolutely right