Talk:Molar mass

message: Molar mass is the mass of one mole of a chemical element or chemical compound. In SI, the unit is kg/mol. The molar mass can be obtained from the relative molecular mass (still often called erroneously molecular weight and abbreviated by MW) multiplying it by 0.001 kg/mol.
there is no element called the dalton is there, it is just a unit of measurement isn't it?  —Preceding unsigned comment added by 124.182.147.2 (talk) 07:35, 5 June 2008 (UTC)
thread_title: molar mass

message: The molecular weight of sugar is 342 and that means there are 342 grams per mole. Its that simple! Why confuse things so tremendously by introducing the obscure Dalton unit and molar mass versus molecular mass?? Wikipedia isn't meant to be read only by PhD physicists and chemists ... it is also meant to be read by us mere mortal masses. - mbeychok 20:50, 25 April 2006 (UTC)
thread_title: "What a tangled web we weave!"

message: I'm not sure the emphasis in "kg/mol being the SI unit" is needed, but what worries me the most is that a reader might get the idea that g/mol is not SI. The kilogram may be the base unit, but gram is certainly also SI! An analogous example would be to have an article on intercity distance saying "The SI unit for intercity distance is the meter. However, for historical reasons the kilometer is more commonly used". :-) --Itub 10:47, 17 October 2007 (UTC)
thread_title:  Regarding kg/mol 

message: M(H) = 1.007 97(7) × 1 g/mol = 1.007 97(7) g/mol
can someone explain what the 97(7) thing is for dummies? 
and why the following line is different, only has (5)
Thankyou  —Preceding unsigned comment added by 124.176.100.173 (talk) 22:30, 19 January 2009 (UTC)
replies: text: This is a standard notation for Measurement uncertainty.--Nick Y. (talk) 16:18, 20 January 2009 (UTC)
thread_title:  regarding the examples 

message: Gram atomic mass redirects here but this is misleading. A Gram atom is only the same as a mole in the case of monatomic elements. Biscuittin (talk) 16:57, 7 February 2010 (UTC)
replies: text: I have restored the Gram atomic mass article. Biscuittin (talk) 17:17, 7 February 2010 (UTC)
replies: text: No, a gram atom is exactly the same as a mole of atoms of an element. You can always have a mole of atoms, whether the elements is monatomic or not. Physchim62 (talk) 21:35, 7 February 2010 (UTC)
thread_title:  Gram atomic mass 

message: At present we have the definition for an element as "The molar mass of atoms of an element is given by the standard atomic mass of the element multiplied by the molar mass constant". This seems to me to be incorrect for a number of reasons.
#The dimensions are wrong, since atomic mass is in mass units and the constant has units of mass/mole;
#The definition for a compound is given as "The molar mass of a compound is given by the sum of the standard atomic weights of the atoms which form the compound multiplied by the molar mass constant" - do we change from atomic mass to atomic weights when considering compounds rather than elements?
#The reference used to support the definition for an element is  which uses atomic weight, not atomic mass.
I'd suggest that the definition for an element ought to use the atomic weight - does anyone agree? --RexxS (talk) 12:33, 28 May 2010 (UTC)
thread_title:  Atomic mass or atomic weight 

message: In the section describing common Molar masses, parenthesis are used in an uncommon (at least to the layman) manner, resulting in confusion.
:M(H) = 1.007 97(7) × 1 g/mol = 1.007 97(7) g/mol
Does the (7) above mean multiplication by 7?  Does it mean multiplication by 7th power of 10?  Does it mean something else entirely?  - JoeOfTheWiki (talk)
::It's a concise notation for uncertainty:  --RolfSander (talk) 17:16, 13 August 2018 (UTC)
thread_title:  Notation needs clarification 

message: Is molar mass and molarity is same? What are the symbols used for both. Rupendra singh maura (talk) 20:25, 2 December 2018 (UTC)
thread_title:  Molar mass and molarity 

message: I just saw molar mass, showing this:
:What a bad performance. -DePiep (talk) 21:36, 16 December 2018 (UTC)
thread_title:  Physical quality not-understanding 

message: One what?  I've scanned the article and some of the links and I've no idea what "one mole of that substance" might be.  A kg?  A cup?  A swimming-pool?  I have no idea.  I'm not being deliberately obtuse, and vaguely remember the term "mole" being used when I studied O-level chemistry, in which I managed a rather lacklustre grade C.  What I do remember is that a "mole" was never described in any useful context, it appeared one day and we were apparently just expected to accept that it was a thing.  I can accept it is a thing, but in order to understand the things that reference it, something a little more specific might be useful! --Vometia (talk) 12:29, 6 May 2019 (UTC)
replies: text: I have turned mole into a link now.--RolfSander (talk) 12:53, 6 May 2019 (UTC)
thread_title:  "one mole of that substance" 

message: formula weight redirects here, but isn't discussed here.  Specifically, it is important for things that aren't molecular, such as ionic crystals.  A standard formula is given, which gives the relative numbers of atoms, even without molecular units. Gah4 (talk) 18:05, 21 June 2019 (UTC)
thread_title:  [[formula weight]] 

message: Would it be possible to add a few examples for compound calculations? Can be simple, and few examples but just as a quick explanation so that people can check that they did calculate the right values on their own. 2A02:8388:1604:F600:3AD5:47FF:FE18:CC7F (talk) 12:04, 19 July 2021 (UTC)
thread_title:  Examples 

message: What is molar mass 110.37.200.117 (talk) 08:42, 25 December 2021 (UTC)
thread_title:  Chemistry