units for mass


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rileygilbertson
Posts: 17
Joined: Mon Oct 02, 2017 7:18 am

units for mass

Postby rileygilbertson » Sun Oct 22, 2017 7:10 pm

Why is the SI unit for mass kilograms? What other equations mandate the use of kilograms?
Last edited by rileygilbertson on Sun Oct 22, 2017 8:02 pm, edited 1 time in total.

Josh Moy 1H
Posts: 58
Joined: Thu Jul 13, 2017 3:00 am

Re: units for mass

Postby Josh Moy 1H » Sun Oct 22, 2017 7:44 pm

because joules is per kilogram

SitharaMenon2B
Posts: 50
Joined: Thu Jul 27, 2017 3:01 am

Re: units for mass

Postby SitharaMenon2B » Sun Oct 22, 2017 9:26 pm

The De Broglie equation and the equation for kinetic energy both require mass (m) to be in kilograms

lauren chung 2f
Posts: 50
Joined: Fri Sep 29, 2017 7:03 am

Re: units for mass

Postby lauren chung 2f » Sun Oct 22, 2017 9:37 pm

You only have to use kilograms as your units when you are doing an equation that has joules in it since a joule is equivalent to kg^2m^2/s^2.

Chem_Mod
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Re: units for mass

Postby Chem_Mod » Mon Oct 23, 2017 1:27 pm

It's Joule because of kilogram, not kilogram because of joule. Convert m to kg everywhere unless there are molar mass there.

Jennah Muhammad 1H
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Joined: Sat Jul 09, 2016 3:00 am

Re: units for mass

Postby Jennah Muhammad 1H » Sun Oct 29, 2017 11:15 pm

what are the unit conversions for kilojoules (K.J) in meters per second?

Chem_Mod
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Re: units for mass

Postby Chem_Mod » Mon Oct 30, 2017 1:44 pm

meters per second is not a unit for energy. Therefore you cannot do the conversion.


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