1st measure its mass using a calibrated electronic balance. 2nd if the powdered substance is insoluble in water, u can measure its volume by placing it into a measuring cylinder of 50cm^3 of water. Record the new reading. 3rd calculate the volume of the substance: new reading(cm^3) - 50(cm^3) 4th using the equation: Density = mass/volume, the density can be determined -- (not patskewl)
--- if you ask me, this answers the question perfectly (patskewl)
1. Apparent density:
- weight a graduated cyllinder
- put the sample in the graduated cyllinder up to a given volume (note this volume)
- weight the graduated cyllinder with the sample
- calculate the mass of the powder by difference
- the density is the ratio mass of the sample/volume of the sample
2. True density of a powder: you need a helium pycnometer.
You would check the density of a powdered solid the same as you would check the density of a liquid. Determine the mass and the volume of a sample, then divide mass/volume.
You said "relative" density but you did not say relative to what. If you wanted to determine the density of an insoluble powder relative to water, you would put the powder into the water. If the powder sinks, it is, relative to the water, denser.
If you wanted to compare two powders of similar grain size, you could sift them together and shake the mixture to see which powder rises to the top. The substance on the bottom is denser. You can try this with popcorn. When you shake the bag, the un-popped dense kernels fall to the bottom (along with all the salt).
Another method called "winnowing" compares particles of similar size and shape and the distance they fall out of an air or fluid stream. The denser particles deposit before the less dense particles. This method is the least reliable because of the interaction of non-related factors such as aerodynamic drag and particle size.
the better way is by using pycnometer
.004g/cm^3
The volume of graphite is dependent on its mass and density. You can calculate it only if you know the sample's mass and density. The same goes for any other substance or object.
60g/kg
Chlorine has a density of 3.2 g/L. So it really depends on how much you have. If you know the volume of your sample you can calculate the weight.
Density = mass / volume As sample size increases, both mass and volume increase in the same ratio.
1. Apparent density: - weight a graduated cyllinder - put the sample in the graduated cyllinder up to a given volume (note this volume) - weight the graduated cyllinder with the sample - calculate the mass of the powder by difference - the density is the ratio mass of the sample/volume of the sample 2. True density of a powder: you need a helium pycnometer.
Density of a substance = (mass of a sample of the substance) divided by (volume of the same sample)
Volume of a sample = (its mass) divided by (its density)
the density of the sample.
density= mass/volume 30g/7500cm3=.004g/cm3
In order to calculate the density of a substance, you must know the volume and the weight of a sample. Then the density is calculated as Density = (Weight) divided by (Volume).
"Tapping" is a procedure in which a powder is placed into a graduated cylinder which is then tapped to compress the sample before its volume is measured. This reduces the amount of air trapped in the material. "Theoretical" is a method of determining the density of a mineral from the volume of a single cell.
What is the density of whey powder?
.004g/cm^3
Its density. Density is mass per unit volume.
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.
To calculate the volume of a 2% Clindamycin solution, we need to know the density of the powder. Different formulations of Clindamycin powder may have different densities. Once we have the density, we can divide the mass of the powder (12 g) by the density to obtain the volume of the solution. The equation is: Volume (mL) = Mass (g) / Density (g/mL).