### sig figs

Posted:

**Sun Mar 17, 2019 12:11 am**When you calculate delta G with the equation delta G=-nFE and you use the numbers n=2 and E=2.05 V, would the answer be in 1 sig fig or 3 because 2 may be inexact?

Created by Dr. Laurence Lavelle

https://lavelle.chem.ucla.edu/forum/

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=161&t=45179

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Posted: **Sun Mar 17, 2019 12:11 am**

When you calculate delta G with the equation delta G=-nFE and you use the numbers n=2 and E=2.05 V, would the answer be in 1 sig fig or 3 because 2 may be inexact?

Posted: **Sun Mar 17, 2019 12:16 am**

Since you have to do the lower number of sig figs, the answer would have one digit.

Posted: **Sun Mar 17, 2019 6:33 pm**

I usually would do 3 sigs figs just to be safe.

Posted: **Sun Mar 17, 2019 7:14 pm**

sig figs are usually 2 digits rounded

Posted: **Sun Mar 17, 2019 7:25 pm**

In that case I would do 2 to account for the decimal and what not