Sig Figs

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Claire_Kim_2F
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Joined: Wed Sep 30, 2020 10:02 pm

Sig Figs

Postby Claire_Kim_2F » Mon Oct 05, 2020 5:40 pm

How many sig figs would 0.003204 have? I assumed it would have four because the zeros before do not count but I just wanted to double check.

Melody Haratian 2J
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Re: Sig Figs

Postby Melody Haratian 2J » Mon Oct 05, 2020 5:45 pm

I also got 4 sig figs which counts the 3204.

Crystal Pan 2G
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Re: Sig Figs

Postby Crystal Pan 2G » Mon Oct 05, 2020 5:46 pm

there are four sigfigs. the leading zeroes don't count as significant figures.

Nandhini Ekambaram 1L
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Re: Sig Figs

Postby Nandhini Ekambaram 1L » Mon Oct 05, 2020 5:48 pm

I also got 4 significant figures: 3204

Jordan Tatang 3L
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Re: Sig Figs

Postby Jordan Tatang 3L » Mon Oct 05, 2020 6:08 pm

Another way to write it would be 3.204 x 10^-3 which is also 4 sig figs if that helps you to visualize it.

Hope that helps! :)

Haochen He 3L
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Re: Sig Figs

Postby Haochen He 3L » Mon Oct 05, 2020 8:28 pm

there are four sig figs: 3204.

Trevor_Ramsey_3H
Posts: 110
Joined: Wed Sep 30, 2020 9:58 pm

Re: Sig Figs

Postby Trevor_Ramsey_3H » Mon Oct 05, 2020 8:31 pm

Hi,

When trying to solve for significant figures, it is best to put it in scientific notation like someone mentioned above. So 3.204 x 10^(-3) shows there are 4 significant figures. Dr. Lavelle posted a significant figures review on his website if you need to brush up on those concepts.

Kiyoka Kim 3C
Posts: 108
Joined: Wed Sep 30, 2020 9:59 pm

Re: Sig Figs

Postby Kiyoka Kim 3C » Mon Oct 05, 2020 8:56 pm

Here are the sources Dr. Lavelle provided on his website about sig figs.
https://lavelle.chem.ucla.edu/wp-conten ... OUT_SF.pdf
https://lavelle.chem.ucla.edu/wp-conten ... ussion.pdf

SamanthaTolentino 3D
Posts: 142
Joined: Wed Sep 30, 2020 10:03 pm

Re: Sig Figs

Postby SamanthaTolentino 3D » Mon Oct 05, 2020 9:20 pm

There are 4 significant figures since leading zeros do not count. The zeros in middle of 3024 in 0.003024 count because it is in between significant digits.

Inderpal Singh 2L
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Re: Sig Figs

Postby Inderpal Singh 2L » Tue Oct 06, 2020 12:35 pm

If significant numbers are an issue for anyone, I studied the topic using mainly this image:

https://getstartedinscience.weebly.com/ ... orig.jpg?1

I think it really sums up everything simply and clearly :)

Nadya Higgins 3F
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Re: Sig Figs

Postby Nadya Higgins 3F » Tue Oct 06, 2020 12:49 pm

Here are some basic sig fig rules for you to refer to, if you want them quick and easy:

1) ALL zeros between non-zero digits are significant (1.077 has 4 sig figs)

2) Leading zeros are NEVER significant; they are just place-holders and this is easier to see if you put your number into scientific notation (0.0056 has 2 sig figs)

3)Trailing zeros are only significant if there is a decimal in the number (9800.0 has 5 sig figs while 9800 has only 2 sig figs)

Ximeng Guo 2K
Posts: 114
Joined: Wed Sep 30, 2020 9:54 pm

Re: Sig Figs

Postby Ximeng Guo 2K » Tue Oct 06, 2020 2:06 pm

Yes there are 4 sig figs.


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