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muminat
3 years ago
13

Is helium a homogeneous or heterogeneous mixture or compound or element?

Chemistry
1 answer:
sattari [20]3 years ago
8 0
Helium is a chemical ELEMENT of the family of noble gases. Its chemical symbol is 'He' which has an atomic number of 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Although it doesn't really react under normal conditions, it is the second most abundant element in the universe.

Elements are pure substances that cannot be broken down any further.
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A gas at a pressure of 360 torrs and a volume of 750 ml. If the pressure becomes 1.5 atm what is the new volume?
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V₂ = 236.84 mL

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3 years ago
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The sign of the entropy change, ΔS, for the following processes include:

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2 years ago
Which of the following statements concerning ionic compounds is
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Answer:

A

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