How do I calculate Molar Mass?

Larry_OHF · 06-13-2005, 08:20 PM

Anybody know?

I am trying to to my homework.

Jorath Calar · 06-13-2005, 08:27 PM

Cheating on your homework, for shame!... [img]smile.gif[/img]

http://en.wikipedia.org/wiki/Molar_mass

Good luck... [img]smile.gif[/img]

Lavindathar · 06-13-2005, 08:27 PM

Quote:

Originally posted by Larry_OHF:
Anybody know?

I am trying to to my homework.

I'd try and learn basic English before you attempt chemistry!!

Lol, just kidding.

Erm, I'll read up on it, cos I used to know...so, I'll glance over some notes tomorrow and let you know cos it's been a few years, and I'm not sure on the EXACT procedure!

Sir Goulum · 06-13-2005, 08:41 PM

There's a couple ways. Depends on the other info you have.

Bumbus · 06-14-2005, 02:22 AM

Molar mass? Does that have anything to do with teeth? [img]graemlins/laughsaywhat.gif[/img]

Eagle eye · 06-14-2005, 02:34 AM

Chemistry song 13

O Come All Ye Gases

O Come all yea gases
diatomic wonders
O come yea, o come yea
calls Avogadro.

O come yea in moles
6 x 10 to the 23rd
O molar mass and molecules
O volume, pressure and temperature
O molar volume of gases at S.T.P.

God I hate chemistry

[ 06-14-2005, 02:35 AM: Message edited by: Eagle eye ]

mad=dog · 06-14-2005, 07:49 AM

As someone said molar mass is a property calculated differently depending on the other known variables of the system. Is it a gas and do you know the partial pressure and volume? Is it a heterogen solution and do you know the concentration and volume? Is it a solid and do you know the mass?

philip · 06-14-2005, 08:36 AM

Just molar mass is often only the values from the periodic system added together like for H20 2*1,008+16,00= 18,02g/mol for water

Sir Goulum · 06-14-2005, 09:22 PM

Oh, duh, I was thinking he was asking number of mols. [img]tongue.gif[/img] Yeah, you just add up the mass of each element in the compound.

Ilander · 06-14-2005, 10:25 PM

Yeah, for the most part it's three-variable algebra. ax=b x=b/a a=b/x

Now, to find the Molar mass of a molecule, you add the Molar masses of each constituent atom...meaning that if there are two of any of them, you add it in twice, etc.

Single-element Molar masses are found on the periodic table...just look it up...chemists do

Ask Dron Cah for more! He's a chemistry-oriented person...

06-13-2005, 08:20 PM	#1
Larry_OHF Ironworks Moderator Join Date: March 1, 2001 Location: Midlands, South Carolina Age: 49 Posts: 14,759	Anybody know? I am trying to to my homework. __________________

06-14-2005, 02:22 AM	#5
Bumbus Dungeon Master Join Date: June 9, 2005 Location: Chicago Age: 53 Posts: 72	Molar mass? Does that have anything to do with teeth? [img]graemlins/laughsaywhat.gif[/img] __________________

06-14-2005, 07:49 AM	#7
mad=dog Avatar Join Date: April 18, 2004 Location: Copenhagen Age: 49 Posts: 549	As someone said molar mass is a property calculated differently depending on the other known variables of the system. Is it a gas and do you know the partial pressure and volume? Is it a heterogen solution and do you know the concentration and volume? Is it a solid and do you know the mass? __________________ [url]\"http://www.dsr.kvl.dk/~maddog/isur.jpg\" target=\"_blank\">Ooooookay. I surrender.</a><br />Sometimes I get the eerie feeling that my computer is operating me and not the other way around.

06-14-2005, 10:25 PM	#10
Ilander 20th Level Warrior Join Date: December 28, 2003 Location: Kentucky Age: 39 Posts: 2,820	Yeah, for the most part it's three-variable algebra. ax=b x=b/a a=b/x Now, to find the Molar mass of a molecule, you add the Molar masses of each constituent atom...meaning that if there are two of any of them, you add it in twice, etc. Single-element Molar masses are found on the periodic table...just look it up...chemists do Ask Dron Cah for more! He's a chemistry-oriented person... __________________ Is that what you really want to say?

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06-13-2005, 08:27 PM	#2
Jorath Calar Harper Join Date: October 6, 2001 Location: Iceland Posts: 4,706	Cheating on your homework, for shame!... [img]smile.gif[/img] http://en.wikipedia.org/wiki/Molar_mass Good luck... [img]smile.gif[/img]

06-13-2005, 08:41 PM	#4
Sir Goulum John Locke Join Date: February 7, 2002 Location: Edmonton, Canada Age: 36 Posts: 8,985	There's a couple ways. Depends on the other info you have.

06-14-2005, 02:34 AM	#6
Eagle eye Elminster Join Date: May 13, 2004 Location: New Zealand Age: 34 Posts: 409	Chemistry song 13 O Come All Ye Gases O Come all yea gases diatomic wonders O come yea, o come yea calls Avogadro. O come yea in moles 6 x 10 to the 23rd O molar mass and molecules O volume, pressure and temperature O molar volume of gases at S.T.P. God I hate chemistry [ 06-14-2005, 02:35 AM: Message edited by: Eagle eye ]

06-14-2005, 08:36 AM	#8
philip Galvatron Join Date: June 24, 2002 Location: aa Posts: 2,101	Just molar mass is often only the values from the periodic system added together like for H20 2*1,008+16,00= 18,02g/mol for water

06-14-2005, 09:22 PM	#9
Sir Goulum John Locke Join Date: February 7, 2002 Location: Edmonton, Canada Age: 36 Posts: 8,985	Oh, duh, I was thinking he was asking number of mols. [img]tongue.gif[/img] Yeah, you just add up the mass of each element in the compound.

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