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en.wikipedia.org/wiki/Amount_of_substance

Amount of substance is a standards-defined quantity that measures the size of an ensemble of ... This number is called Avogadro's number and has the value ... the unit 1/mol, and relates the molar mass of an amount of substance to its mass. .... of molecules in a given volume of gas, now known as the Loschmidt constant.

en.wikipedia.org/wiki/Mass

In physics, mass is a property of a physical body. It is the measure of an object's resistance to ... Thus, any stationary body having mass has an equivalent amount of energy, and ... mass measures the gravitational force exerted on an object in a known ... The mass of an object determines its acceleration in the presence of an  ...

www.answers.com/Q/The_amount_of_mass_an_object_has_in_a_known_volume

Amount of mass a material has for its volume? Density is the mass of a standard volume. Units (SI): kg per cubic metre (by I.S.U.C ty ). 3 people found this useful.

www.nyu.edu/pages/mathmol/textbook/whatismatter.html

A nickel has the mass of about one gram. Objects that take up space and have mass are called matter. ... and other characteristics that can be seen without changing how that object looks are its physical properties. ... Density is the mass of a substance per unit volume. Volume is the amount of space an object occupies.

scienceprimer.com/buoyancy

The relationship between object's volume and mass is called its density. Density is defined as the mass of an object per unit volume. Mathematically ... The object sinks into the water until it displaces an amount of water equal to its own mass. ... Since water has a density of 1 g/cm3, a 1 g object will displace 1 cm3 of water.

www.physics.ucla.edu/k-6connection/Mass,w,d.htm

Everyone has been confused over the difference between "weight" and "density". ... States today, almost no one knows what the unit of mass is called--it's not the pound. .... The idea is to compare the unknown object with the mass of a known amount. .... Measuring Density: Since density is mass per volume, the most straight ...

www.calculator.net/mass-calculator.html

Free online tool to calculate the mass value based on density and volume. ... Often, the amount of mass something has is related to its size, but not always. ... pounds and ounces ‐ in the U.S., the correct measure of mass is called the "slug. ... =?ma, an object with a mass, m, of one kilogram will accelerate, a, at one meter per ...

www.boundless.com/chemistry/textbooks/boundless-chemistry-textbook/introduction-to-chemistry-1/units-of-measurement-29/volume-and-density-185-3709

A measure of the amount of matter contained in a given volume. volume ... The density of a material is defined as its mass per unit volume. ... to substances, and it has a density of 1000 kg/m 3 at Standard Temperature and Pressure (called STP). ... If the object has a lower density than water, it will float to the top of the water.

www.quora.com/Physics-Density-is-defined-as-mass-per-unit-volume-but-others-say-that-its-the-amount-of-matter-that-composes-an-object-of-a-specific-volume-Which-of-the-two-definitions-is-it

Mass per unit volume is correct. The SI unit for mass is kilograms. SI unit for volume is m^3, ... Physics: Density is defined as "mass per unit volume," but others say that it's the amount of matter, that composes an object, of a specific volume. Which, of the two definitions, is it? UpdateCancel ...

www.wikihow.com/Calculate-Volume-and-Density

Volume is the amount of space an object occupies while density is the mass of an object per unit volume.http://uncw.edu/chem/Courses/Reeves/ ... A rectangular solid, also known as a rectangular prism, is similar to a cube in that it is a ... Each shape has its own formula that calculates how much three-dimensional space ...