given the balaced equation representing a reation: 2H2 + 02 arrow 2H20 what is the mass of H20 preoduced when 10.0 grams of H2 reacts completely with 80.0 grams of 02? 1.  70.0g 2.  90.0g 3. 180.g 4. 800.g

Expert Answers

An illustration of the letter 'A' in a speech bubbles

The chemical equation between hydrogen and oxygen is `2H_2 + O_2 -> 2H_2O` .

Two mole of water is produced when 2 moles of hydrogen and one mole of oxygen react with each other. The molar mass of hydrogen is 2 and the molar mass of oxygen is 32. The molar mass of water is 18.

10 g of `H_2` is equivalent to 5 moles of hydrogen and 80 grams of oxygen is equivalent to 5 moles of oxygen. The number of moles of water produced is 5. This is equivalent to 90 g of water.

The correct answer is option 2.

Approved by eNotes Editorial Team

We’ll help your grades soar

Start your 48-hour free trial and unlock all the summaries, Q&A, and analyses you need to get better grades now.

  • 30,000+ book summaries
  • 20% study tools discount
  • Ad-free content
  • PDF downloads
  • 300,000+ answers
  • 5-star customer support
Start your 48-Hour Free Trial