What is the density of an 84.7 g sample of an unknown substance if the sample occupies 49.6 cm?
Kelly has a sample of an unknown substance. Which properties of the substance will be the same no matter how large or small her sample is?
What is the density of a sample of ore that has a mass of 57g and occupies What is the density of a sample of ore that has a mass of 57 g and occupies 29 cm3 Answer in units of g cm3?
A sample thought to be pure lead occupies a volume of 15.0 mi.and has a mass of 160.0g.determine the density and is the sample pure lead?
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.
Exactly the way you measure the density of anything else. -- Procure a clean, representative sample of the substance, any size. -- Measure the mass of the sample. -- Measure the volume of the sample. -- Take the numbers out of the laboratory and back to your cubicle. -- Divide the sample's mass by its volume. -- The quotient is the density of the substance.
I regard this as a trick question, because it is not really true or false, it depends upon the specific substance which we are sampling. A very homogeneous substance, such as for example distilled water, is always going to have the same density in every sample, but a somewhat heterogeneous substance such as concrete, is not going to have exactly the same density with every sample.
Density is independent of the amount of material in a sample. A sample of a homogeneous substance used to find the density can have any volume. If a cm3 of the substance weighs 8.1 grams, then 10 cm3 will weigh 81.0 grams. We might consider water in a glass or bottle as an example. A small sample will have a given weight (mass) because water has a given density. Ten times that sample volume will…
Nothing happens to the density. It's a property of the <substance>. The density is the same regardless of how large a piece you have. That's why density is a useful concept. It tells you something that's true of the <substance> regardless of what size sample you're holding. A large block of ice has the same density as a small ice cube. The 49Â¢ sample of Acme soap has the same density as the $1.49 family-size…
The volume and the mass of sample both depend on the size of the sample. A small sample has small volume and small mass, a big sample has big volume and big mass. But the ratio of mass to volume is constant for a pure sample of a substance, no matter what size the sample is. That ratio is called the density of the substance.
Nothing happens to the density. It's a property of the <substance>. The density is the same regardless of how large a piece you have. That's why density is a useful concept. It tells you something that's true of the <substance> regardless of what size sample you're holding. A large block of ice has the same density as a small ice cube. The 49¢ sample of Acme soap has the same density as the $1.49 family-size…
If I take a radioactive sample of 400 moles of an unknown substance and let it decay to the point of three half-lives I would have 50 moles left of the sample. 1/2 of what is left will decay in the next half-life. At the end of that half-life I will have 25 moles left of the unknown substance or 4/25.
A 54-gram sample of a unknown material has a volume equal to 20 cm3. Based on its density could the sample be aluminum?
Density is defined as the amount of matter (mass) per unit of volume of a specific substance, and is calculated by dividing the mass of any sample of the substance in question by its volume. Considering the unit of density as g/cm3 (grams per cubic centimeter or grams per cc), the density of the substance in your question is exactly 1.5 g/cm3.