You have an aquarium which holds 2.65 gallons of water and you would like to place it on an antique stand. Before placing the aquarium on the stand, as a precaution, you decide to determine the weight of the water in the aquarium. Determine the weight of water you will be placing in the aquarium.

The weight of the water is 10.0 kg

Explanation:

Hi there!

Since the density of water is 1 g/ml, knowing the volume of water, we can determine its weight. First, let's convert the unit gallon into liters:

1 gallon = 3.785 l

Then:

2.65 gallons · (3.785 l / 1 gallon) = 10.0 l

Since 1 l = 1000 ml, 10.0 l will be 10000 ml

The density of water is 1 g/ml, then the weight of 10.0 l is 10000 g or 10.0 kg.

10.0 kg

Explanation:

1 gallon of water is equal to 3.79 liters of water. Then, 2.65 gallons of water are:

2.65 gal water * (3.79 L water / 1 gal water) = 10.0 L water

The density of water is about 1.00 kg/L. The mass corresponding to 10.0 L of water is:

10.0 L * (1.00 kg/L) = 10.0 kg

The mass of 2.65 gallons of water is 10.0 kg.