Chemistry 2-19-09 Formula Mass & Molar Mass

CHEMISTRY: Great job today! Hey Juniors – we missed you! Here’s the mini-lesson from Thursday on calculating formula mass & molar mass. Great job today – we’ll take it one step further tomorrow!

~ by Ms. Skinner on February 19, 2009. Tagged: formula mass, molar mass

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28 Responses to “Chemistry 2-19-09 Formula Mass & Molar Mass”

John Eason Says:
February 19th, 2009 at 9:15 PM
What is formula mass?

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Mary Gates Reply:
February 20th, 2009 at 4:23 PM
John- It’s like the mass of an ion, formula unit, or molecule and the sum of the masses of al the atoms in a chemical formula

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Emma Says:
February 19th, 2009 at 9:26 PM
is the only difference in molar mass and formula mass that you use u for formula and grams or g/mol?

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Kara Says:
February 19th, 2009 at 9:32 PM
What do you do if you have more than one atom of something when you are calculating formula mass?

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chris casto Says:
February 19th, 2009 at 9:56 PM
how do you fin molar mass

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Britteny Hudson Says:
February 19th, 2009 at 10:05 PM
John, formula mass is the sum of all the mass’ of the atoms in one formula.

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josh hopkins Says:
February 20th, 2009 at 9:46 AM
what is molar mass?

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jeeen yoon Says:
February 20th, 2009 at 1:14 PM
what’s formula mass?

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Austin Welch Reply:
February 20th, 2009 at 2:21 PM
Formula mass is the mass of a molecule, ion or formula unit and the sum of mass of all atoms in the chemical formula. Its unit is amu.

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jimbo griffith the great Says:
February 20th, 2009 at 1:16 PM
how do you find molar mass

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trey Reply:
February 20th, 2009 at 3:22 PM
jimbo: the molar mass is calculated by summing the masses of the elements present in a mole.

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John Michael Sisinni Says:
February 20th, 2009 at 2:52 PM
What is formula mass?

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Bhale Reply:
February 20th, 2009 at 3:19 PM
john micheal

formula mass is the sum of tha average atomic mass of all atoms in its formula.

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ashley white Says:
February 20th, 2009 at 3:06 PM
which elements can you not round the mass?

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Jalen Gipson Says:
February 20th, 2009 at 3:10 PM
Will you always use the mass of the elements to find the formula mass?

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Marissa Says:
February 20th, 2009 at 4:29 PM
emma. That is the only difference between molar mass formula mass!

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jake dunaway Says:
February 20th, 2009 at 4:42 PM
how do you do formula mass?

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cathy Says:
February 20th, 2009 at 6:23 PM
when do you know to use u or amu for formula mass?

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cayleb paxton Says:
February 20th, 2009 at 6:48 PM
what unit is used with formula mass?

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Cody Says:
February 20th, 2009 at 7:17 PM
What is formula mass?

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Beth Ann Gooch Says:
February 20th, 2009 at 10:14 PM
Cayleb: the unit used with formula mass is u

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Ryan DuBois Says:
February 20th, 2009 at 11:04 PM
What is the unit used with molar mass?

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Will Says:
February 22nd, 2009 at 2:20 PM
What’s the differenc between formula mass and molar mass?

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Katherine Robinson Reply:
February 23rd, 2009 at 4:41 PM
Formula mass is the mass of one atom, one molecule, or one formula unit. It’s measured in amu or u. Molar mass is the mass of one mole of that compound, 6.022 * 10 >23 atoms, molecules, or formula units. It’s measured in grams.

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autumn bloodworth Says:
February 25th, 2009 at 5:06 PM
how do you convert from molecules to moles?

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abby purdom Says:
February 25th, 2009 at 5:07 PM
which conversion factor do you have 6.022x 10(23) for?

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Caitlin Moore Reply:
February 26th, 2009 at 1:50 PM
What is the formula used to find molar mass?

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Caitlin Moore Reply:
February 26th, 2009 at 1:51 PM
what is the conversion factor for molar mass

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