what is the formula for the number of moles in a substance?

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what is the formula for the number of moles in a substance?

2007-10-14 14:48:06 · 4 answers · asked by Janie 2 in Science & Mathematics ➔ Mathematics

4 answers

grams/(grams/mole)=moles

It can also be found from the balanced chemical equation from the reaction. The coefficient before the element or compound will be the number of moles.

2007-10-14 14:55:01 · answer #1 · answered by ? 5 · 0⤊ 0⤋

Number of particles Ã· Avogadro's number

Example

9.3 x 10^24 molecules of oxygen =

(9.3 x 10^24) Ã· (6.022 x 10^23) moles of oxygen =

15 moles of oxygen

2007-10-14 14:55:43 · answer #2 · answered by Marvin 4 · 0⤊ 0⤋

is the ratio between the weight and the molar weight of the substance

2007-10-14 14:56:13 · answer #3 · answered by santmann2002 7 · 0⤊ 0⤋

moles = molarity x volume (in Liters)

2007-10-14 14:52:04 · answer #4 · answered by misoma5 7 · 0⤊ 0⤋