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What is tap density?

Updated: 10/24/2022
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12y ago

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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.

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Q: What is tap density?
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How does tap density and bulk density differs?

"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.


How does the speed of sound in tap water compare with the speed of sound in pure water?

For a liquid, we find that the speed of sound decreaseswith increasing density but increases with increasing bulk modulus. Increasing the dissolved solids will increase density, but also bulk modulus. In general, bulk modulus will increase "faster" with an increase in dissolved solids than density will increase. And this translates into a net increase in the speed of sound in water with increasing dissolved solids. Tap water has dissolved solids, so the speed of sound in tap water should be higher than it is in pure water at the same temperature and pressure.


What happens when salt water is poured into the glass containing cold tap water?

When salt water is poured into a glass containing cold tap water, the salt water will collect and settle at the bottom of the glass. This is due to the salinity and density of the salt water.


How does the density of salt water compare with the density of tap water and Why?

beacuase they were all water, the difference is the mineral content which are negligible or has no bearing on the water density. they all contain same elements of periodic table the only differences are stuff dissolved in them, which are so minimal they make no difference to density or structure


What will float in saltwater but not float in tap water?

Objects that contain a higher density that water will sink, but if the same object has a lower density that saltwater, then it will float in salt water. And this also depends on the concentration of sodium ions present in the salt water. As the concentration of the sodium ions increase, the density of the salt water increases.