Answer:
i need help with that too.
Explanation:
Answer:
3 moles of CaO
Explanation:
The chemical balanced equation is;
2Ca + O₂ → 2CaO
The ratio of calcium(Ca) to Calcium Oxide(Cao) in this equation is 2:2.
Now, when 3 moles of calcium react with oxygen, Cao produced will be;
3 moles of O₂ × 2 moles of CaO/2 moles of Cao = 3 moles of CaO
This noble gas is argon (Ar), because its third energy level is full.
Answer:
here it is
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The correct answer is D, they are reviewed by experts.
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