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Weight of Water

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Introduction

In our routine life, there are specific fields in which we are required to measure the weight of water. It is not any difficult task to measure the volume of a liquid specifically water in a regular shaped container. All calculations are just a game of mathematical calculations of the capacity of that specific shaped container. Just make the measurement of the level of the water then make some required adjustments. But if the container has not any specific or regular shape, it becomes a challenging task. To cope up this issue, density does work. When we know the density of water at a specific temperature it becomes easy to calculate the weight of a volume of water. It becomes easy to measure the weight of the liquid within a container. Then, subtract the weight of the container and use the density of the water to get your answer. So, we need to know the density, amount of matter within a certain volume.

Density

Density is defined as mass per unit volume. In fact, it is a measurement as how tightly and heavy the molecules are packed in an object.

$$Density = \frac{Mass}{Volume}$$

Unit of mass is “g”

Unit of volume is “c3

Actually, density is a specific property of liquid. Density of any specific sample of liquid will remain the same at the same temperature. The density of water is 1 g/cm3. You can check the density and specific water weight on the table

Table of Density and Specific Gravity of Tap* Water and Pure Water

Temp (°C) Density purewater (g/cm3) Density pure water(kg/m3 Density tap water (g/cm3) Density pure water lb/cu.ft Specific Gravity 4°C reference Specific Gravity 60°F reference
0 (solid) 0.9150 915.0 - - 0.915 -
0 (liquid) 0.9999 999.9 0.99987 62.42 0.999 1.002
4 1.0000 1000 0.99999 62.42 1.000 1.001
20 0.9982 998.2 0.99823 62.28 0.998 0.999
40 0.9922 992.2 0.99225 61.92 0.992 0.993
60 0.9832 983.2 0.98389 61.39 0.983 0.985
80 0.9718 971.8 0.97487 60.65 0.972 0.973

This is for clean water but can vary from area to area.

Density of liquid water from 0 ℃ to 100 ℃ is given below

weight of water

Volume

To find water weight, without the weight of the container, you require another container or gallon to measure the weight of the first container. So, first of all, check the weight of the container. For accuracy, your container should be dry. After that, pour the water into the container and check the weight of both collectively. Then subtract the weight of the container from this calculation to get the weight of water. To find the volume of the water divide the mass by the density of water.

$$Volume = \frac{Mass}{Density}$$

There is given the volume of 1 gram of water at different temperatures in the following table.

Temperature (°C) Volume (mL)
17.0 1.0022
18.0 1.0024
19.0 1.0026
20.0 1.0028
21.0 1.0030
22.0 1.0033
23.0 1.0035
24.0 1.0037
25.0 1.0040
26.0 1.0043

How to Use length, Width and Height to Calculate Volume?

weight of water

As volume is three dimensional state so you can easily multiply these three given sides in any order. It does not matter which side is width, length or height.

Weight of water

Specific Weight of Water

The specific weight actually is the weight per unit volume of matter. The value of the specific weight of water is 9.807 kN/m3 or 62.43 lbf/ft3

How Much Does a Gallon of Water Weigh?

Generally, the weight of a gallon of water is 8.35 lbs or 3.80 Kg at 17 °C. But if we talk about a grand size gallon of water weight at the densest temperature, it will be almost 10.024 lbs or 4.547 Kg

How to Calculate the Weight of Water?

Here is a step by step procedure to calculate the weight of water

  • Find the volume and density of water
  • Convert the specific volume into liters
  • Multiply volume by the density

It’ll be your required number as

 

$$Weight = volume * density$$

Weight of Water for different volumes

Volume Weight (oz) Weight (lb) Weight (g) Weight (kg)
1 teaspoon 0.0109 0.1739 4.929 0.004929
1 tablespoon 0.0326 0.5216 14.787 0.0148
1 cup 0.5216 8.345 236.59 0.2366
1 pint 1.043 16.691 473.18 0.4732
1 quart 2.086 33.382 946.35 0.9464
1 gallon 8.345 133.53 3,785.4 3.785
1 milliliter 0.002205 0.0353 1 0.001
1 liter 2.205 35.274 1,000 1
1 cubic inch 0.0361 0.578 16.387 0.0164
1 cubic foot 62.428 998.85 28,317 28.317
1 cubic yard 1,685.6 26,969 764,555 764.55
1 cubic centimeter 0.002205 0.0353 1 0.001
1 cubic meter 2,204.6 35,274 1,000,000 1,000

If you are here to find the weight of water, I am really hopeful that this tool will be proved helpful to you in this regard.


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