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What is the procedure to calculate the density of an unknown substance?
Wiki User
∙ 6y ago
divide mass and volume(:
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∙ 14y ago
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What are the usefulness of density in identification of unknown substance?
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.
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 you know density if the mass is unknown?
To find density if you have a known mass, you must have the volume that the mass occupies. Density is weight (mass) per unit of volume, so a volume for a given mass must be known to make a density statement. You must know the mass and volume to calculate density.
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.
If you had an unknown substance and were asked to identify it would you use the intensive or extensive properties of the substance?
Intensive properties are independent from the mass of an object: density, hardness, melting point.
What procedures would you follow if you wanted to calculate the density of an unknown substance?
Weigh it & measure its volume.
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.
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
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
What are the usefulness of density in identification of unknown substance?
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.
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.
Knowing the solubility of an unknown substance in water can help to identify what it is.?
Knowing the solubility of an unknown substance in water can help you calculate its molarity. It is however important to get its weight first.
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.
What procedures would you do if you wanted to calculate the density of an unknown substance?
This depends on the nature and form of the sample:- for a solid with a regulate shape weight the sample and calculate the volume from the dimensions; density is the ratio between mass and volume. You can measure the volume of great sample by water displacement.- for other solids use a pycnometer- for liquids use a densimeter (simple or electronic)etc.
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.
