2007-03-14 10:44:42 · 4 answers · asked by Inquisitive-me 1 in Science & Mathematics ➔ Chemistry
this is a very vague question.
but in a general sense it is the sum of the atoms that make up a molecule. for example H2O has two hydrogen molecules and one oxygen molecule. The hydrogen molecules each weigh 1 gram/mole and the oxygen weighs 16 grams/mole.
The molecular weight of water is therefore 18 grams/mole
2007-03-14 10:48:33 · answer #1 · answered by Jon R 2 · 0⤊ 0⤋
enable the compound's mass be one hundred g. next, locate the style of moles of each and every element chanced on interior the compound. C: fifty 5.8 g / 12 g/mol = 4.sixty 5 mol H: 7.0 g / a million g/mol = 7.00 mol O: 37.2 g / sixteen g/mol = 2.33 mol Divide all values via the smallest fee; 2.33. C: 4.sixty 5 / 2.33 ? 2 H: 7.00 / 2.33 ? 3 O: 2.33 / 2.33 ? a million this means that the empirical formula is C2H3O. to locate the molecular formula, divide the actual molar mass (given interior the subject) via the empirical molar mass. Distribute the ensuing quotient to the subscripts of the empirical formula afterwards. desire this helps!
2016-10-18 09:38:20 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Just add up the molecular mass of each element in the compound
2007-03-14 10:47:31 · answer #3 · answered by reb1240 7 · 0⤊ 0⤋
I believe that would be a Mole.
2007-03-14 10:48:48 · answer #4 · answered by fatcat988 2 · 0⤊ 0⤋