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Only refined water (by distillation, ion exchangers, reverse osmosis etc.) may be pure.
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∙ 10y ago
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All samples of pure water have the same mass?
There is a thing called heavy water. It is pure water that has a deuterium in it known as D20 instead of H20. It is pure but does not have the same mass.
Should the density of Al be the same for all Al samples?
The density of pure aluminium is the same for all samples.
Why do you not find pure samples of highly reactive elements on the ground?
The reason is because they react with everything, and once they react with another element they are no longer a pure substance.
Why do samples dissolve in mineral oil but not water?
I don't know what these samples are of, but somethings just dissolve in oil but not in water. That's one of the properties they have.
Why do you not find pure samples of highly reactive elements on ground?
because then there would be many explosions in the Earth.
Is water a mixure or a pure substance?
Strictly, water itself is a pure substance, but most of the samples of water we meet are mixtures. De-ionized water which we use in the lab is water and nothing else (pure). Tap water and natural samples from the world around us contain dissolved substances from the air and the rocks, so they are mixtures.
All samples of pure water have the same mass?
There is a thing called heavy water. It is pure water that has a deuterium in it known as D20 instead of H20. It is pure but does not have the same mass.
Are all samples of water have the same composition of hydrogen and oxygen?
All pure water is the same, but most water we use has other things in it. For example mineral water has minerals.
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.
How could you determine if a simple gold is pure?
compare the samples density with that of pure gold
Why is water made with salt water colder than water made with pure water?
Salt makes the water colder. Neither the question nor the answer make any sense. The question needs more context than it has. It sounds like you meant to ask something about the freezing point of water but you said 'water' not 'ice'. You don't tell us whether you started with two identical samples and added salt to one or whether two friends brought you samples of pure and salt water and you simply measured the temperature of both. One could easily make a counter-example by heating salt water and not heating pure water. The salt water will be warmer than the pure water.
Should the density of Al be the same for all Al samples?
The density of pure aluminium is the same for all samples.
Which type of bonding are likely be involved in the samples that were not conductors in their pure form but conducted a current when they were mixed with water?
You think probable to organic covalent compounds which are not dissociated in water.
Are there pure samples of alkali metals in the earth's crust?
yeayayaya
How you make pure samples of xenon?
Fractional distillation of air.
How do you make pure samples of plutonium?
Pure plutonium is obtained as a result of the reaction of PuF4 with calcium, barium or lithium.
How do you make pure samples of neon?
you google it Fractional liquefaction of air.
