SI units for exam

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Katherine Chhen 3I
Posts: 53
Joined: Fri Sep 28, 2018 12:15 am

SI units for exam

Postby Katherine Chhen 3I » Tue Oct 01, 2019 3:25 pm

Are we required to put the correct number of significant figures for the exam to get full credit?

005388369
Posts: 73
Joined: Sat Sep 28, 2019 12:16 am

Re: SI units for exam

Postby 005388369 » Tue Oct 01, 2019 3:51 pm

Yes. I heard that he will take points off if you don't get the sig figs correct.

Jamie Hwang 2F
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Joined: Thu Jul 25, 2019 12:16 am

Re: SI units for exam

Postby Jamie Hwang 2F » Tue Oct 01, 2019 3:56 pm

Professor Lavelle has a link to this page on his website that is all about sig figs and how to use them and I found that really helpful rather than having to look online and trying to remember everything.

Sally kim 4F
Posts: 53
Joined: Thu Jul 25, 2019 12:17 am

Re: SI units for exam

Postby Sally kim 4F » Wed Oct 02, 2019 11:09 pm

Definitely use sig figs. When you do use sig figs on his tests, make sure to only apply it on the final answer instead of the values obtained throughout the problem.

Pablo 1K
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Joined: Sat Feb 02, 2019 12:15 am

Re: SI units for exam

Postby Pablo 1K » Wed Oct 02, 2019 11:14 pm

Yes, and it varies how many you use, typically the same amount as of a given amount of some substance. EX: 100 g of CAC2 (problem continues on), the sig figs here would be 3 due to the (100).

Kassidy Ford 1I
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Re: SI units for exam

Postby Kassidy Ford 1I » Thu Oct 03, 2019 11:06 am

To elaborate on the above comment, usually you round sig figs to the least amount of sig figs given in the problem. This is to make the answer as accurate as possible.

Reina Robles 2B
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Joined: Fri Aug 09, 2019 12:16 am

Re: SI units for exam

Postby Reina Robles 2B » Thu Oct 03, 2019 12:42 pm

Thanks for all the information everyone! Also I think this is the link for the SI info that was mentioned earlier:

https://lavelle.chem.ucla.edu/wp-conten ... OUT_SF.pdf


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