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anonymous

  • 4 years ago

For this problem, I need to give an answer with the correct number of significant figures.

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  1. anonymous
    • 4 years ago
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    \[2.80/(8)(25)\]

  2. Xishem
    • 4 years ago
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    The final answer in multiplication and division should have the same number of significant figures as the number that had the least in the problem. In this case, that number is 8.

  3. anonymous
    • 4 years ago
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    I knew that much. When I put it in my calculator, I got: 0.013835758835- and so on.

  4. Xishem
    • 4 years ago
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    Then by the rules of significant figures, you can only keep one sigfig: \[2.80/(8)(25)=0.01\]

  5. anonymous
    • 4 years ago
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    Lol thank you. I actualyl jsut realized that I used the wrong thing and got the same answer. Possible you can assist me with another: 5.5*0.242/9.62*10.0 When I multiplied the numerators and denominators, I got 1.331/96.2. Divided that and had 0.013835758835- and so on. which was where it actually originated. Would it be the same thing?

  6. Xishem
    • 4 years ago
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    Well, in that case, the number with the least number of significant figures in that calculation has 2, so you would keep 2 sigfigs: \[=0.014\]

  7. anonymous
    • 4 years ago
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    That makes sense. I neglected to use the 0's.

  8. Xishem
    • 4 years ago
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    http://www.chem.sc.edu/faculty/morgan/resources/sigfigs/sigfigs3.html This might help if you need an overview of significant figure rules.

  9. anonymous
    • 4 years ago
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    Thanks! it does. I just need more practice and i'm sure that I can do this no problem. Your help is appreciated.

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