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What does the O stand for in H2O?

Retry Correct Incorrect The O in H2O stands for Oxygen. Yep, you know that resource that we would die without? It’s pretty important. We all know it, we all breathe it. Oxygen. Osmium is a metal.

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Cate Gillon/Getty Images

Cate Gillon/Getty Images

What does the O stand for in H2O?

• 0-Zero
• Nitrogen
• Osmium
• Oxygen