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What is the most important type of intermolecular forces between molecules in a sample of pure water?
Hydrogen bonding
Is yellowish clear and odorless water an example of pure water?
no, pure water is absolutely clear. it doesnt have any color whatsoever. if there is a yellowish color, it means there are impurities in the sample.
How do you identify a pure substance?
1. Check the melting point or boiling point of the substance. E.g. it is known that the boiling point of water is 100 degree celcius. It a sample of water boils are 101 degree celcius, the sample is impure. 2. Check if melting or boiling occur over a range of temperatures. E.g. if water boils from 101 to 103 degree celcius, then it is impure because pure water boil exactly at 100 degree celcius. 3. Perform paper chromatography. If the sample has only one spot on the chomatogram then it is pure substance.
How do you make a pure sample of helium?
A pure sample of helium can be obtained by extracting it from natural gas through a process called fractional distillation. This involves cooling the natural gas to very low temperatures, which causes the various components to condense at different points. By isolating the helium gas at the corresponding temperature, a pure sample can be obtained.
How do you convert mollaces water into pure water?
To convert molasses water into pure water, you can use a process called distillation. This involves heating the molasses water to create steam, which is then collected and condensed back into pure water. This separates the water from impurities such as sugar and other molasses components, producing pure water.
Can salt be separated by distillation?
Yes. Distillation serves to separate pure water from saltwater. However, what remains is not salt, but highly-salinated water called "slurry".
What is the function of methylene blue solution on polluted water samples?
Polluted water sample will decolorize the methylene blue solution faster than a pure water sample.
What purpose is is served when water is used instead of a sample substance?
For example to establish a zero point for an instrument or to make a measurement on water considered as a pure sample.
Which will freeze faster pure water or or a mixture?
Pure water will freeze at a higher temperature than a mixture containing water. Therefore, if a means for extracting energy from a sample of pure water is the same as a means for extracting energy from a sample of a mixture containing water, the pure water will freeze first.
What is pure sample of calcium?
A pure sample of calcium is a silver-white metal that is highly reactive and not typically found in its elemental form in nature. It is commonly found in compound form, such as calcium carbonate in rocks like limestone, or in calcium phosphate in bones and teeth.
Which methods is used to obtain pure copper sulphate from impure sample and how?
One method to obtain pure copper sulfate from an impure sample is by recrystallization. In this process, the impure sample is dissolved in water, and then the solution is heated and slowly cooled to allow pure copper sulfate crystals to form. These crystals are then filtered out and dried to obtain the pure compound.
What is a sample of matter either a single element or a single compound?
a pure substance! ;)
Using a powerful microscope it is possible to see hydronium and hydroxide ions in a sample of pure water?
no
Can you see hydronium and hydroxide ions in a sample of pure water?
no, because pure water has an even number of H+ ions and OH- ions that have all bonded to form H2O.
How could you get a sample if soluble salt?
To get a sample of soluble salt, you can dissolve the salt in water, filter out any impurities, then evaporate the water to leave behind the salt crystals. This will give you a pure sample of the soluble salt.
How could a sample of pure water be obtained from the lemon drink?
The lemon drink can be separated into water and lemon juice by a process called distillation. Distillation involves heating the lemon drink to vaporize the water, which is then collected and condensed back into liquid form as pure water.
How could a sample of pure water be obtained from the drink?
You could distill the water from the lemon drink and condense the water vapor and collect the water in a container.
