How to calculate density of water?

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The formula which is used to calculate density of water is so easy, you can apply easily.

Use the definition of density= weight/volume. Surely, you have an accurate volume measurement, such as a pipette which can transfer a given volume to a beaker which has been weighed w/o water. Now weight it after the water has been added.

Remember that:

Density= Weight/Volume or Density=Mass/Volume

 

Besides, you also remember this formula through 5 basic steps in photo as follows:

Step 1: Fill a graduated cylinder with the amount of water

Note: You must note the amount because this is your “volume”

 

Step 2: Then, you have to weigh the graduated cylinder with the water in it

Step 3: Remove the water, so you can weigh the cylinder without the water:

Step 4: After weighing everything, you have enough data and you More >

What is density of water and oil ?Which is less dense?

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1/Density of water

One of the most common substance on our own planet is Water which covers approximately 75% of the Earth ‘s surface and exists almost in every living thing on there.

a.Definition

Density of water is defined as weight of water per unit of its volume and signed as “D”. The units used to show density are [kg/m3] or more popular used [g/cm3]

b.Formula

The formula to determine the density of water is:

D = m/V ; in which:

-D: represents Density (kg/m3, g/m3)

-m: represents Mass (kg, g)

-V: represents Volume (m3, cm3)

c.Detail table

Temperature (oC)

Density (g/m3)

30

0.9957

20

0.9982

10

0.9997

4

1.0000

0

0.9998

-10

0.9982

-20

0.9935

-30

0.9839

 

At aprox. 4oC pure water has it’s highest density :

  • 1 g/cm3

More >

Is the density of water the same as the specific gravity of water? Why?

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Is the density of water the same as the specific gravity of water? We can answer this website through below analysis. After that, you can realize by yourself whether the density of water the same as the specific gravity of water or not.

Relative density is a dimensionless ratio of the densities of two materials. The term specific gravity is similar, except that the reference material is water. A relative density can help quantify the buoyancy between two materials, or determine the density of one “unknown” material using the “known” density of another material. Mathematically, relative density is expressed as:

Including:

G is the relative density and ρ is the densities of the two materials in the same units (e.g., kg/m³, g/cm³).

Relative density is dimensionless, since it is a ratio between two quantities of same unit. If the ratio is greater than 1, the object will be heavier than More >

The Egg Experiment: How does the density of water change egg flotation?

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Have you ever egg floating in water? Do you know how the density of water changes egg flotation? And can you make an egg float by changing the density of water? Here we have the answer:

If you put an egg in tap water, it will sink to the bottom. If you add enough salt, the egg will float to the surface. Density is the mass or volume of an object. It’s easier to think of it as thickness of the object. This is an interesting experiment for kids to learn about density. You can do this as a family project together, as a home school project or as a science project school.

You can increase the density of water by adding salt. Eggs float at different levels in water depending on how much is added. If no salt is added, the egg just sinks to the bottom. More >

Relationship among Density, Specific Weight, Specific Gravity

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Now, there are some people who usually misunderstand 3 definitions: Density, Specific Weight and Specific Gravity. Hereafter, we will define these notions clearly.

1. Density

a) Definition and formula:

Density is defined as an object mass per unit volume. Mass is a property.

The density can be expressed as

ρ = m / V = 1 / vg         (1)

 Including:

ρ = density (kg/m3)

m = mass (kg)

V = volume (m3)

vg = specific volume (m3/kg)

The SI units for density are kg/m3. The imperial (U.S.) units are lb/ft3 (slugs/ft3). While people often use pounds per cubic foot as a measure of density in the U.S, pounds are force measures, not mass. Slugs are the correct measure of mass. You can multiply slugs by 32.2 for a rough value in pounds.

b) Example

- Use the Density to Identify the Material:

An unknown liquid substance has a mass of 18.5 g and More >

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