What are the units for Molar Mass in Chemistry and Physics?

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The unit for molar mass can be expressed as grams per mole (g/mol) or kilograms per mole (kg/mol), depending on the context. In chemistry, g/mol is commonly used, while physics typically uses kg/mol as the SI unit. Both units are acceptable, and the choice often depends on the specific problem or teacher's preference. It's important to ensure that units are consistent and properly converted when necessary. Ultimately, there is no single "correct" unit for molar mass; it varies based on the discipline and context of the question.
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Unit for Molar Mass(M)??

Homework Statement


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

Homework Equations


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
 
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SAT2400 said:

Homework Statement


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

Homework Equations


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.
 


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.
 


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


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.
 
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