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.

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.

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.