Sig Figs

Science questions not covered in Chem 14A and 14B. Try to limit questions to chemistry (inorganic chemistry, physical chemistry, organic chemistry, biophysical chemistry, biochemistry, materials science, environmental chemistry).

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Jasmine_Bagnas_1D
Posts: 10
Joined: Wed Sep 21, 2016 2:57 pm

Sig Figs

Postby Jasmine_Bagnas_1D » Sat Jan 28, 2017 8:48 pm

For the upcoming quiz, should we round sig figs after each calculation or wait until the final answer to round?

Lauren Trent 2A
Posts: 21
Joined: Wed Sep 21, 2016 2:56 pm

Re: Sig Figs

Postby Lauren Trent 2A » Sat Jan 28, 2017 8:58 pm

Usually it's best to wait to determine sig figs until you reach the final answer, as if you round during the process you may end up with a final answer that is not as accurate as it could have been due to the rounding error.

Navi Sidhu 1F
Posts: 25
Joined: Wed Sep 21, 2016 2:59 pm

Re: Sig Figs

Postby Navi Sidhu 1F » Sat Jan 28, 2017 8:59 pm

Prof Lavelle typically requires us to round at the end of a calculation.

shreya_mantri_3I
Posts: 17
Joined: Fri Jun 17, 2016 11:28 am

Re: Sig Figs

Postby shreya_mantri_3I » Sat Jan 28, 2017 11:28 pm

How many decimal places do we have to round off the sig figs to again?

Ashley Shirriff 2F
Posts: 10
Joined: Wed Sep 21, 2016 2:55 pm

Re: Sig Figs

Postby Ashley Shirriff 2F » Sat Jan 28, 2017 11:35 pm

It depends on the data given in the question. For example, when multiplying and dividing, your answer will have the same number of sig figs as the number given in the problem with the least number of significant figures.

christy_zambrano_2E
Posts: 11
Joined: Wed Sep 21, 2016 2:57 pm

Re: Sig Figs

Postby christy_zambrano_2E » Sun Jan 29, 2017 10:43 pm

I also heard that we do NOT consider temperature when applying sig figs. Is this true? For example, say all the given units are in 4 sig figs and temperature is in 3, does our end calculation have three or four sig figs?


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