Chemistry, 28.10.2020 16:40 husk84

Think and discuss: Helium is the second most abundant element in the universe, but it is rare in Earth’s atmosphere. Most of the helium used to fill balloons and blimps must be extracted from Earth’s crust. How do you think this helium formed?

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Think and discuss: Helium is the second most abundant element in the universe, but it is rare in Ear...

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