Homework Help: Chem

Posted by Chem Help!! on Friday, February 8, 2008 at 3:13pm.

In an experiment 16.81 +/- 0.02 grams of hydrogen peroxide chemically decomposes into the products water and oxygen gas. The measured mass of oxygen gas produced in the reaction is 8.854 +/- 0.003 grams. Report the mass of water produced to the correct number of significant digits (Do not perform any calculation involving the estimates of uncertainties in the measurements.)

Is the answer 7.96 grams?? Is it the correct num of sig figs??

Chem - lauren, Friday, February 8, 2008 at 3:18pm
well you have more 00.00 sig figs than 3 so i would put it as 4 sig figs not 3
- Chem - Chem Help!!, Friday, February 8, 2008 at 3:27pm
  1. 7.95 g
  2. 7.956 g
  3. 7.96 g
  4. 7.960 g
  5. 8.0 g
  6. 8.00
  7. none of the above
  
  Which is more the right choice....It can't be 7,6,5 for sure....But I thought it was 3. It's not 2.
Chem - drbob222, Friday, February 8, 2008 at 3:48pm
Answered below with an explanation.
Chem - Use the equation below to determine how many grams of water (H2O) will be produced if 32.0 g of nitr, Thursday, November 15, 2012 at 3:28pm
Use the equation below to determine how many grams of water (H2O) will be produced if 32.0 g of nitrous oxide (N20) are also produced in the reaction?

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