Water has a density of approx 1kg/l (or 1g/ml) so 1 litre has a mass of approx 1 kg.
The total mass of the water and container will be the mass of the water plus the mass of the container. If it is a plastic container it will have negligible mass and so the total mass will be approx 1 kg.
At about 4 °C, one litre of water has a mass of almost one kilogram. Therefore, one kilogram plus the weight of the container will give you the gross weight. For most purposes, the plastic bottle holding the water is so lightweight it can be ignored.
Its weight is approx 9.8 Newtons.
1 liter of water weight about 1 kilo. (The exact weight depends on the pressure and temperature). Therefore the container above holds 3.2 liters.
A container that holds water.
you will need a gallon container.
A container holds volume.
The amount a container will hold is the volume of the container. It is also the Capacity if the container has liquid in it.
cistern
Punnet
A 72x72x24 foot container holds 930,696.3 gallons.
If the bottle holds 500 mL of water, then its contents have a nominal mass of 500 grams, and weigh 4.9 newtons (1.1 pounds) on Earth. -- If it holds some other substance, then its mass and weight are different. -- If it is weighed in some other place, then the weight of the same mass is different. -- This discussion applies only to the bottle's contents. We have no way to estimate the mass or weight of the container.
A gallon.
Volume.
A 1 gallon jug.