Final answer:
One imperial gallon of propane weighs approximately 1.894 grams.
Step-by-step explanation:
The weight of one imperial gallon of propane can be calculated by utilizing the conversion factor and the density of propane. The conversion factor states that 1 gallon equals 3.78541 liters. The density of propane is approximately 0.5005 g/mL. By multiplying the conversion factor by the density, we can determine the weight per gallon.
Weight of propane = Conversion factor x Density
Weight of propane = 3.78541 L/gal x 0.5005 g/mL
Weight of propane = 1.894 g/gal
Therefore, one imperial gallon of propane weighs approximately 1.894 grams.