What weight of water is required to fill a 80 gallon aquarium?

The answer must be in kN

Using the density formula:p=m/v you can find the mass of water by re-arranging the formula to pv=m

(Density of Water)*(80 gallons)=mass of water.
To find the weight in kN, used Fg=mg
Plug in m and g to get Fg
Fg=(mass of water[found in first part])*(acceleration due to gravity)
this should give it to you in Newtons(N) so divide it by 1000 to get it to kN.
*I'm from canada, so I'm not use to working with gallons and whatever you use for acceleration due to gravity*

To find the weight of water required to fill an 80-gallon aquarium, we need to convert gallons to kilograms and then to kilonewtons (kN).

1. Convert gallons to liters:
1 gallon = 3.78541 liters
So, 80 gallons = 80 * 3.78541 liters = 302.8328 liters

2. Convert liters to kilograms:
1 liter of water weighs approximately 1 kilogram.
Therefore, 302.8328 liters of water would weigh approximately 302.8328 kilograms.

3. Convert kilograms to kilonewtons:
1 kilonewton (kN) is equal to 1000 newtons (N).
Since 1 kilogram mass has a weight of 9.81 newtons, the weight in kilonewtons would be:
302.8328 kg * (9.81 N/kg) / 1000 N = 2.9752 kN

Therefore, approximately 2.9752 kN of water is required to fill an 80-gallon aquarium.

To determine the weight of water required to fill the 80-gallon aquarium, we need to know the density of water. The density of water is approximately 1000 kilograms per cubic meter (kg/m³) or 9.81 kilonewtons per cubic meter (kN/m³).

First, we need to convert the volume of the aquarium from gallons to cubic meters.

1 gallon is approximately equal to 0.00378541 cubic meters.

So, 80 gallons can be converted to cubic meters as follows:

80 gallons * 0.00378541 cubic meters/gallon ≈ 0.3028 cubic meters

Next, we can calculate the weight of the water using the formula: weight = volume * density.

weight = 0.3028 cubic meters * 9.81 kN/m³ ≈ 2.971 kN

Therefore, the weight of water required to fill the 80-gallon aquarium is approximately 2.971 kilonewtons (kN).