0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Is selenium powder a pure substance?
Selenium is a pure chemical element.
Should the density of Al be the same for all Al samples?
The density of pure aluminium is the same for all samples.
What does selenium and oxygen combined together make?
Selenium dioxide, SeO2
Why water samples are pure?
Only refined water (by distillation, ion exchangers, reverse osmosis etc.) may be pure.
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.
Is selenium powder a pure substance?
Selenium is a pure chemical element.
How you make pure samples of xenon?
Fractional distillation of air.
Is selenium available at stores?
Pure selenium not; various preparations yes.
How do you make pure samples of neon?
you google it Fractional liquefaction 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.
What are the substances found in selenium?
Selenium is a chemical element. It can be said to be a pure substance; there is nothing else found in it.
How do you make pure samples of caclium?
The most straightforward way to make a pure sample of calcium is to electrolyze a molten calcium salt with an "inert" cathode such as platinum. Considerable care is required to prevent reaction of pure calcium with the ambient atmosphere.
How could you determine if a simple gold is pure?
compare the samples density with that of pure gold
How does elements combine to form elements why not compounds?
Elements are pure samples of only one type of atom. By definition, elements combing make a compound. You cannot have a pure combination of something.
Should the density of Al be the same for all Al samples?
The density of pure aluminium is the same for all samples.
What does selenium and oxygen combined together make?
Selenium dioxide, SeO2
Are there pure samples of alkali metals in the earth's crust?
yeayayaya
