Sig Figs in Calculations vs Sig Figs in the Question?  [ENDORSED]

Moderators: Chem_Mod, Chem_Admin

KC Navarro_1H
Posts: 33
Joined: Fri Apr 06, 2018 11:04 am

Sig Figs in Calculations vs Sig Figs in the Question?

Postby KC Navarro_1H » Fri Apr 06, 2018 9:17 pm

Hi!

I was wondering when you’re doing a multiplication/division calculation to find the number of grams, moles, etc., do you use the least amount of sig figs in the proposed question or the least amount of sig figs while you’re calculating the quantity?

Chem_Mod
Posts: 18918
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 745 times

Re: Sig Figs in Calculations vs Sig Figs in the Question?  [ENDORSED]

Postby Chem_Mod » Sat Apr 07, 2018 9:09 am

You should use the least number of significant figures that you use, meaning either the problem or in your calculations. However, in most cases you will have fewer significant figures in the problem since the values you use in calculations are more precisely measured (i.e. molar mass, constants). You should never use fewer significant figures than what is given in the problem if it can be avoided.


Return to “Significant Figures”

Who is online

Users browsing this forum: No registered users and 1 guest