# Chem

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??

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1. well you have more 00.00 sig figs than 3 so i would put it as 4 sig figs not 3

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posted by lauren
2. 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.

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3. Answered below with an explanation.

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posted by drbob222
4. 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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