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Chemistry 26 Online
OpenStudy (anonymous):

molar mass?

OpenStudy (anonymous):

can anyone taught me how to find molar mass ?

OpenStudy (anonymous):

@waterineyes @Blitzkrieg @eujc21 @tryder

OpenStudy (anonymous):

MOLAR MASS: Molar Mass of a compound is equal to the sums of the Molar Masses of all the Atoms in one Molecule of that compound. For Example: In Case of \(NaCl\): Molar Mass = (1 atom x 23 grams/mole \(Na\)) + (1 atom x 35.5 grams/mole \(Cl\)) = 58.5 grams/mole \(NaCl\)..

OpenStudy (anonymous):

Getting or not??

OpenStudy (anonymous):

In case we have \(FeCl_2\), there are one atom of \(Fe\) and two atoms of \(Cl\) So, We find it by: Molar Mass = (1 atom x 56 grams/mole \(Fe\)) + (2 atoms x 35.5 grams/mole of \(Cl\)) = 127 grams/mole of \(FeCl_2\)...

OpenStudy (anonymous):

First of all you need to know the atomic masses of elements...

OpenStudy (anonymous):

i hav 2 remember it can u tell me hw to finee molecular mass/?

OpenStudy (nottim):

just the formula itself?

OpenStudy (nottim):

Or, using the periodic table?

OpenStudy (nottim):

Say you just wanna use the periodic table It's the value at the "bottom" of the element sqaure, usually labelled atomic mass (unit is U)

OpenStudy (nottim):

if it is a compound, say |dw:1342768293359:dw|, then you would multiply the atomic mass, (1.01), by 2.

OpenStudy (nottim):

BUT, for |dw:1342768341352:dw|, the first "2" is ignored if you're just looking for the Mm.

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