3 years ago

Iron is denser than helium. True or false

1 answer:

4 0

Explanation:

Elements heavier than Helium are synthesized in a number of environments. For elements that are lighter than Iron, those elements are synthesized during various phases in the evolution of massive stars. For elements heavier than Iron, one needs quite a bit of energy input to form these heavy elements.

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Abbreviation for mole

Sedbober [7]

Answer:

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Explanation:

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Use the equation: 2Mg + O2→ 2MgO

ludmilkaskok [199]

Answer:

3 moles of O2 needed

Explanation:

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Answer:

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Answer:

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