When multiplying conversion factors, make sure the only remaining units are the desired units.
About 133.44oz/gal
Practice makes perfect
We are given that water weighs about 8.34 pounds per gallon. We want to find about how many ounces per gallon the water weighs. This means that we need to change pounds per gallon into ounces per gallon.
8.34 lb/gal= oz/galTo do so, we will use the fact that 1 pound is equal to 16 ounces. Let's write this relationship as a unit ratio.
16 oz/1lb
To perform the conversion, we need to multiply the weight in pounds per gallon by the unit ratio or its reciprocal. Remember, we want to arrange these ratios such that every unit we do not want gets canceled out, and only the units that we want will remain.
We found that about 8.34 pounds per gallon equals about 133.44 ounces per gallon. This means that the water weighs about 133.44 ounces per gallon.
Extra
Common Conversion Factors
Use the following tool to explore some of the most commonly used conversion factors. Conversions can be made both within or between the metric system and the imperial system, also known as the U.S. Customary System.
Around the world, people use conversion factors on a regular basis. You can read more about some practical applications of conversion factors in our original content.
