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Density
Density is mass per unit of volume. Density also shows how tightly packed in molecules are in a material and also help determine buoyancy.
1,201 Questions
How do you find the density of an irregular shaped object that also reacts with water?
We will assume there is no difficulty in weighing the object, so the problem becomes how to measure the volume of the object accurately enough to calculate the density within a reasonable degree of certainty. There are several possible ways.
- Immerse the object in a non-reactive liquid (oil, perhaps) and measure the amount of liquid displaced.
- Apply a thin coat of insulating material (paint, or wax) all over the object, and then immerse the coated object in water and measure the amount of water displaced.
- Cut the object into a group of regular geometric shapes (boxes, spheres, prisms, cones, pyramids, etc.), and measure the dimensions of each geometric shape, and calculate the aggregate volume (destructive, and less accurate)
- Drill a cylindrical core sample of the object, weigh the sample, and precisely measure the dimensions of the cylindrical sample to calculate volume (destructive, and assumes the density of the object is uniform)
- Make a clay, wax, or other mold of the object, and measure the volume of the mold.
- Place the object in an three dimensional laser scanner and compute the volume using the software in the scanner computer.
If you squeeze the foam you will increase its density why?
When you squeeze the foam, you are reducing the volume it occupies while keeping the same amount of material. This causes the molecules within the foam to be packed more closely together, increasing its density.
The density of agar varies depending on its concentration, but typically ranges from 1.0 to 1.5 g/cm3.
What is the tool used to find the density of a liquid?
Hydrometer is used in batteries to measure density. A float tells you the density using displacement.
Stainless Steel 321 has density of 0.29 pounds per cubic inch,
which is 8.0272 grams per cubic cm.
The density of polypropylene copolymer (PPCP) can vary depending on its composition, but it generally ranges from 0.90 to 0.91 g/cm3.
In electromagnetism, charge density is a measure of electric charge per unit volume of space, in one, two or three dimensions. More specifically: the linear, surface, or volume charge density is the amount of electric charge per unitlength, surface area, or volume, respectively. The respective SI units are C·m−1, C·m−2 or C·m−3.[1]
Like any density, charge density can depend on position, but because charge can be negative - so can the density. It should not be confused with the charge carrier density, the number of charge carriers (e.g. electrons, ions) in a material per unit volume, not including the actual charge on the carriers.
In chemistry, it can refer to the charge distribution over the volume of a particle; such as a molecule, atom or ion. Therefore, a lithium cation will carry a higher charge density than a sodium cation due to the lithium cation's having a smaller ionic radius, even though sodium has more electrons (11) than lithium (3).
What measurement must you make to find the density of a sample of matter?
Two measurements are needed - you must find its mass and its volume. Density is mass divided by volume.
How does the density of the egg compare with the density of the plain water?
A fresh chicken egg will sink, an old egg will float. The egg has an air pocket in the blunt end that grows as the egg dries out.
What is the density of a loonie?
Density is equal to mass divided by volume.
mass of loonie is 7 grams
volume of loonie is .78cm^3
7÷.78 = 8.974358974358974 g/cm^3
ABS's density is 1.04 grams per cubic centimeter or 0.0376 pounds per cubic inch. Even though it's denser than water, it is strongly hydrophobic so small pieces can "float" due to surface tension.
Source: http://www.sselec.com/data/ins%20specs/ABS%20Data%20sheet.pdf
What mineral has the greatest density?
Osmium is the densest naturally occurring mineral. It is a rare platinum metal that is denser than lead and has a density of around 22.59 grams per cubic centimeter.
How do you Find The Density Of a Teaspoon?
The density of the teaspoon has to do with its material, that is usually unknown. In physics the density (ρ) of a body is the ratio of its mass (m) to its volume (V), a measure of how tightly the matter within it is packed together. Its SI units are kilograms per cubic metre (kg/m³). It is also sometimes given in the cgs units of grams per cubic centimetre (g/cm³). You may wish to find the density in order to identify the unknown material. Here's the classroom experiment: Mass is so closely related to weight (as long as you remain on Earth) that you can use the weight as mass. It would be near impossible to mathematically measure and calculate the volume of a spoon, but you can find it by submerging it in a measured container of water and measuring the amount of water displaced (the surface area times the change in depth). Divide the weight by the volume and you have the density. The numbers will be small, so taking the measurements in grams and cubic centimeters would probably give results with a manageable number of decimal places.
What is the density of hartzburgite?
The main minerals of hartzburgite are olivine and serpentine, clinoamphibole and orthopyroxene and sometimes also biotite. There is no fixed density.
What is the density of isopropanol?
The chemical formula of isopropyl alcohol is C3H8O. The density of isopropyl alcohol is 786.00 kilograms per cubic meter.
Tapped density is the term used to describe the bulk density of a powder (or granular solid) after consolidation/compression prescribed in terms of "tapping" the container of powder a measured number of times, usually from a predetermined height. The method of "tapping" is best described as "lifting and dropping". Tapping in this context is not to be confused with tamping, sideways hitting or vibration.
Find the density of an object that has a mass of 34grams and a volume of 14ml?
34/14 = 2.429 gm/cc (rounded)
The density of the metal chromium is rho = 7,140 kg/m³ or rho = 7,14 g/cm3.
The density of LaNi5 is approximately 6.6 g/cm3. LaNi5 is a metallic compound that is commonly used as a hydrogen storage material due to its ability to absorb and release hydrogen gas.
How do you get the formula for net explosive weight?
To get the Net Explosive Weight, (NEW)
Quantity x Weight x RE Factor= NEW
Im not sure what explosives you are using. but this is the military format for explosives.
For example
5 blocks of C4
C4 weighs 1.25 lb's/ block
C4's RE factor is 1.34
5 x 1.25 x 1.34 = 8.375
8.375 is the NEW of JUST the C4, in your calculations you will have to include Detonation cord, initiators, etc...
Hope this answered your qestion
BB's are not all made of the same materials. Some of the best are nearly pure copper. The density of copper is 8,920 kg/m3. Your instructor probably has some BB's and lab equipment he expects you to use to determine their density. Measure a BB and calculate it's volume. Weigh it and and convert your measurements into kg/m3.
What is the history of density?
The concept of density was first introduced by the ancient Greek philosopher Archimedes in the 3rd century BC. He discovered the principle of buoyancy, which led to the concept of density as a measure of mass per unit volume. Density has since become a fundamental property of materials used in various scientific fields, such as physics, chemistry, and engineering.
Density and buoyancy are related in that density determines an object's buoyancy. An object will float in a fluid if its density is less than that of the fluid, making it buoyant. If the object's density is greater than that of the fluid, it will sink.
How do you figure out density?
Density is calculated by dividing the mass of an object by its volume. The formula for density is D = m/V, where D is density, m is mass, and V is volume. The unit of density is typically grams per cubic centimeter (g/cm^3).
What is the definiton of density?
Density is a measure of how much mass is contained in a given volume. It is calculated by dividing an object's mass by its volume. Objects with higher density have more mass packed into a smaller volume than objects with lower density.
