# Unit for Molar Mass(M)?

SAT2400
Unit for Molar Mass(M)??

## Homework Statement

What's the unit for Molar mass? Is it different in CHemistry and Physics?

PV=nRT

## The Attempt at a Solution

In Chemistry class(last year) I think I used (g/mol).
But in Physics, my teacher says it's (kg/mol).
What is right??
THanks

E=mc^84

## Homework Statement

What's the unit for Molar mass? Is it different in CHemistry and Physics?

PV=nRT

## The Attempt at a Solution

In Chemistry class(last year) I think I used (g/mol).
But in Physics, my teacher says it's (kg/mol).
What is right??
THanks

In Physics, the SI unit for mass is the Kg. In chemistry, it usually is grams but it also depends on the type of questions you do and what S! unit the question asks for.

Homework Helper

g/mol, kg/mol, slugs per mol, and (whatever other mass unit) per mol are all fine for both physics and chemistry. However, it may be more convenient to use a certain unit for certain calculations.

Mentor

It is like asking which is a 'correct' pressure unit - PSI, atm or Pascal.

jumbogala

In your assignments and tests, use whichever you feel more comfortable with. Then just convert the answer to the units your teacher wants. There is no "correct" unit here, just your teacher's personal preference.

If you are careful to always make sure your units check out and cancel properly, there should be no problem.