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water density (at standard temp of approx 25C and pressure of 1 atm; "STP") 1 gram per cubic centimeter, or 1 gram per milliliter (density of H2O vs T: http://www.simetric.co.uk/si_water.htm)
methylene chloride density, same conditions, 1.3266 grams per cubic centimeter, or 1.3266 grams per milliliter
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In the extraction of tea with methylene chloride and water will methylene chloride be the upper or lower level?
Just compare the densities of both water and CH2Cl2. Water is less dense and will be in the top (aqueous) layer. CH2Cl2 is more dense and will be on the bottom (organic) layer. Density H2O = 1.00 g/cm3 Density CH2Cl2 = 1.33 g/cm3
Why dissolve Br2 in methylene chloride and not in water?
because water is highly polar and Br2 is non-polar so the molecules in the water are more attracted to each other. But methylene chloride is non-polar so its molecules are no more strongly attracted to other methylene chloride molecules than they are to Br2 molecules. Since all of the forces are weak, the substance can dissolve.
Why calcium chloride added in sodium chloride to lower the melting point?
The heat of dissolution for calcium chloride in water is greater compared with the same paremeter for sodium chloride; consequently the process of dissolution need more heat from the environment and the freezing point of the water solution is lower.
What is the density anomaly?
Density anomaly refers to an item having a density that is abnormal when compared to the usual densities of similar items. An example would be water since it has a low density of 1.
Compared to a low-density spherical particle a high-density spherical particle of the same size will sink through water when?
More rapidly.
In the extraction of tea with methylene chloride and water will methylene chloride be the upper or lower level?
Just compare the densities of both water and CH2Cl2. Water is less dense and will be in the top (aqueous) layer. CH2Cl2 is more dense and will be on the bottom (organic) layer. Density H2O = 1.00 g/cm3 Density CH2Cl2 = 1.33 g/cm3
Why is hexane insoluble in water and methylene chloride is soluble in water?
Hexane is not a polar molecule, and thus is not soluble in water. Methylene chloride is not soluble in water for the same reason.
When doing a solvent pair recrystallization which of the following pairs will work ethanol and water methylene chloride and water dimethylformamide and diethyl ether?
Definitely not methylene chloride and water as these are not miscible solvents.
What is the Evaporation rate of methylene chloride?
Very fast. It can be evaporated quickly at room temperature, especially in a vacuum. It is also more dense than water, and is therefore found on the bottom of a water/methylene chloride mixture.
Why dissolve Br2 in methylene chloride and not in water?
because water is highly polar and Br2 is non-polar so the molecules in the water are more attracted to each other. But methylene chloride is non-polar so its molecules are no more strongly attracted to other methylene chloride molecules than they are to Br2 molecules. Since all of the forces are weak, the substance can dissolve.
Why does sodium chloride sink?
1. Because the density of sodium chloride is higher than the density of water. 2. Sodium chloride is soluble in water.
Why does water's density decrease after potassium chloride salt is added?
The water density doesn't decrease.
What is styrofoam density compared to water?
The density of styrofoam is lower: about 0.028 to 0.045 times that of water.
Does Alcohol have a high density?
Well that depends, do you think 0.79 grams is high? Compared to water, which has a density of 1.0 grams.. so does alcohol have a high density compared to water? No. :P
What is the density method?
mass / volume = density relative density is that compared to water ( 1g / cm3)
What is the effect of sugar compared to water on density?
Sugar has a greater density than water. This is obvious from the fact that it sinks in water. If you add sugar to water, the water's density increases.
What is compared to water that allows ice to float?
Density.
