Using a vernier caliper or ruler , measure the length, depth and width of the object in centimeters. Multiply these three measurements to find the volume in cubic centimeters. Divide the object’s mass by its volume to determine its density. Density is expressed in grams per cubic centimeter or grams per milliliter.
What two tools are used to measure density?
However, density comes into play with fluids and floatation, as a denser object will always sink into a less dense fluid, and float on a fluid of greater density. A hydrometer is a special device used to determine the density of liquids.
What 2 measurements are needed to find density?
Density is the mass of an object divided by its volume . Density often has units of grams per cubic centimeter (g/cm 3 ). Remember, grams is a mass and cubic centimeters is a volume (the same volume as 1 milliliter).
What is used to determine density?
Density is calculated by the dividing the mass by the volume , so that density is measured as units of mass/volume, often g/mL. If both water samples are at the same temperature, their densities should be identical, regardless of the samples’ volume.
What is Refractometric method?
Refractometry is the analytical method of measuring substances’ refractive index (one of their fundamental physical properties) in order to, for example, assess their composition or purity. ... Therefore, the refractive index of water at 20 degrees Celsius, taken at the Sodium D Line, would be reported as 1.3330 nD20.
What is the formula for calculating density?
The formula for density is d = M/V , where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre. For example, the density of water is 1 gram per cubic centimetre, and Earth’s density is 5.51 grams per cubic centimetre.
What is the formula of volume?
| Table 3. Volume Formulas | Shape Formula Variables | Cube V=s3 s is the length of the side. | Right Rectangular Prism V=LWH L is the length, W is the width and H is the height. | Prism or Cylinder V=Ah A is the area of the base, h is the height. |
|---|
What is formula for mass?
Mass is always constant for a body. One way to calculate mass: Mass = volume × density . Weight is the measure of the gravitational force acting on a mass. The SI unit of mass is “kilogram”.
How do you find the density of two liquids?
Place the mixture on a mass scale and read its mass. If it is liquid mixture, be sure to subtract the mass of the container holding the liquid. Divide the mass by the volume to determine the density.
What is the amount of mass?
Mass is a measure of the amount of matter that an object contains . The mass of an object is made in comparison to the standard mass of 1 kilogram.
What is the density symbol?
The symbol for density is the Greek letter rho , What is the density of a material if 450 cm 3 of it has a mass of 200 g?
What is the difference between density and volume?
Introduction: Volume – How much space an object or substance takes up. ... Density – How much space an object or substance takes up (its volume) in relation to the amount of matter in that object or substance (its mass ). The amount of mass per unit of volume.
Why is refractometer used?
A refractometer is used to determine a concentration of a particular substance within a given solution . It operates based on the principle of refraction. When rays of light pass from one medium into another, they are bent either toward or away from a normal line between the two media.
How do you calculate refractive index?
- Figure 1 – Refraction of Light.
- Formula 1 – Snell’s Law. n 1 × sin(θ 1 ) = n 2 × sin(θ 2 )
- Formula 2 – Numerical Aperture. NA (numerical aperture) = n × sin(θ)
- Formula 3 – Refractive Index (or Index of Refraction) n = c/η
What instrument is used for refractive index?
The refractometer is a well-established instrument used for measuring the water content of liquids. It measures the refractive index of the liquid, which changes according to the moisture content.
What are the 3 formulas for density?
- To work out density: p = m / V.
- To work out the mass: m = p x V.
- To work out the volume: V = m / p.
