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What is the chemical formula for water?

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What’s inside this PDF?

Question: What is the chemical formula for water?

Options:

  1. H2O
  2. CO2
  3. O2
  4. H2O2

Correct Answer: H2O

Solution: 

The chemical formula for water is H2O.

What is the chemical formula for water?

Practice Questions

Q1
What is the chemical formula for water?
  1. H2O
  2. CO2
  3. O2
  4. H2O2

Questions & Step-by-Step Solutions

What is the chemical formula for water?
  • Step 1: Understand that water is a compound made of two elements: hydrogen and oxygen.
  • Step 2: Know that each water molecule contains two hydrogen atoms and one oxygen atom.
  • Step 3: Write the symbol for hydrogen, which is 'H'.
  • Step 4: Since there are two hydrogen atoms, write 'H2'.
  • Step 5: Write the symbol for oxygen, which is 'O'.
  • Step 6: Combine the symbols to form the chemical formula: H2O.
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