unit convertion

Moderators: Chem_Mod, Chem_Admin

Tiffanny_Carranza_2D
Posts: 64
Joined: Fri Oct 02, 2020 12:15 am

unit convertion

Postby Tiffanny_Carranza_2D » Mon Oct 19, 2020 7:23 pm

when converting a unit fir example 5.11x10^-4CM to meters do we just mulitply by 10^-2? i got the correct answer doing this but I would just like some reasurance that it is the right way to do it?

Akshata Kapadne 2K
Posts: 114
Joined: Wed Sep 30, 2020 9:40 pm
Been upvoted: 2 times

Re: unit convertion

Postby Akshata Kapadne 2K » Mon Oct 19, 2020 7:25 pm

Yup! I usually divide by 100 since there are 100 cm in 1 meter, but multiplying by 10^-2 is the same thing.

Stuti Pradhan 2J
Posts: 159
Joined: Wed Sep 30, 2020 9:32 pm
Been upvoted: 5 times

Re: unit convertion

Postby Stuti Pradhan 2J » Mon Oct 19, 2020 7:26 pm

Yes, that is correct! Think about it like (5.11x10^-4 cm) x (10^-2m/cm). That way the units cancel and you get the right conversion.

Hope this helps!

gabbi_r2C
Posts: 91
Joined: Wed Sep 30, 2020 9:52 pm

Re: unit convertion

Postby gabbi_r2C » Mon Oct 19, 2020 7:36 pm

Yes you can multiply by 10^-2, as it is the same thing as dividing by 100 like you would in dimensional analysis; if you're not sure, this method is actually a very easy way to keep track of how units cancel out in a calculation, and to ensure you end up with the proper units at the end.

Crystal Hsueh 2L
Posts: 115
Joined: Wed Sep 30, 2020 9:35 pm
Been upvoted: 1 time

Re: unit convertion

Postby Crystal Hsueh 2L » Mon Oct 19, 2020 7:57 pm

Yes! You can also divide by 100 when converting from centimeters to meters. But when doing other conversions that are a bit more complicated like nanometers to meters (which isn't complicated but you don't want to divide by 1000000000) you can divide by 10^9. When converting from meters to nanometers you would multiply by 10^9.


Return to “SI Units, Unit Conversions”

Who is online

Users browsing this forum: No registered users and 1 guest