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What are the usefulness of density in identification of unknown substance?
Wiki User
∙ 14y ago
Density is useful for identifying an unknown material because it is a physical constant. A physical constant is a unique characteristic of the material in question. This constant never change or vary with the shape or amount of the material/substance.
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoThe density is a specific property of any material. Measuring densities, we can sometimes identify different materials.
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What is the procedure to calculate the density of an unknown substance?
divide mass and volume(:
Where you can get a FREE lab type identification on unknown substance read my profile for more information?
You may be able to get a free lab type identification on an unknown substance by contacting your local law enforcement agency or a university with a forensic science program. They may have the resources to analyze the substance for you. Additionally, you could reach out to non-profit organizations or government agencies that offer free testing services for certain substances.
What are two ways to compare the density of a unknown substance?
One way is using the formula D=m/v. Or you could get some water and put the substance inside the water and see if the density is lower or higher.
What are physical properties which can often be applied for the identification of unknown organic compounds?
The bottom layer should be water since toluene has a density of around 0.87 g/mL.
Can you determine the identity of unknown substance by observing its mass and volume?
No, you cannot. The mass and volume of an unknown substance will give you its density. Density is not a property that can identify a substance unless you know that it is pure but not if it could be a mixture. For example, sodium has a density of 0.97 g/cc and osmium a density of 22.6 g/cc. These two metals can be combined in various proportions to give an alloy with a density with any value between the two given numbers. I am not sure how stable such an alloy might be but the point is that you could make an alloy with the same density as tin, or iron, or lead or bronze or most other metals or metallic alloys that you care to name.
What is the procedure to calculate the density of an unknown substance?
divide mass and volume(:
How do you determine the identity of an unknown substance by observing its mass and volume?
All you can do with mass and volume is to determine the density of the substance. density = mass / volume or p=m/v after you determine the density, you can look on any density table and find the substance you are looking for. good look. -julio
What is the density of a 26.5mL sample of an unknown substance that has a mass of 43.54g?
density = mass/volume = 43.54g / 26.5ml ≈ 1.643 g/ml
What procedures would you follow if you wanted to calculate the density of an unknown substance?
Weigh it & measure its volume.
If a cubic box is filled with an 44.4g of an unknown substance then what is the density in g per m³ of that unknown substance assuming the box is completely full?
To answer that you would need to know the size (volume) of the box.
What is the density of a unknown substance with a mass of 15 and a volume of exactly 20 mL?
density = mass/volume density = 15/20 = 3/4 units/ml
Why is it not necessary to know the volume of a substance when calculating its density?
If you want to CALCULATE the density of an unknown substance, you need to divide its mass by its volume, so you need to measure both first. If it is a homogeneous (uniform) substance, and you can take away a piece, you can take any sample. Any piece of the substance will have the same density.
Where you can get a FREE lab type identification on unknown substance read my profile for more information?
You may be able to get a free lab type identification on an unknown substance by contacting your local law enforcement agency or a university with a forensic science program. They may have the resources to analyze the substance for you. Additionally, you could reach out to non-profit organizations or government agencies that offer free testing services for certain substances.
What are two ways to compare the density of a unknown substance?
One way is using the formula D=m/v. Or you could get some water and put the substance inside the water and see if the density is lower or higher.
How can the property of density be useful as qualitative information about a specific substance?
Density information for a substance is useful because it is always the same regardless of the amount of substance there is. Take water for example. The density of water is same regardless if you have ten gallons of it or tablespoon of it. (1 gram/milliliter at STP). Since the density of a substance is always the same this property can exploited to determine the identity of unknown substances.
How do you find steel density formula?
You can look up the density of different materials in a table of densities. But if you want a formula, just use the definition of density as mass / volume. This is also how you would measure the density of a substance of unknown density.
What is the density of an unknown substance with a mass of 16.5 g and a volume of 2.2 cm3?
Density = Mass/Volume = 16.5 g / 2.2 cm3 = 7.5 g/cm3
