2006-09-24 05:31:17 · 4 answers · asked by ~ 1 in Science & Mathematics ➔ Chemistry
of water right?
MM H2O = 18 g/mole
80.6g(1mole/18g)(6.022 x 10^23molecules/1mole)
2.7 x10^24 molecules H2O...
best answer?
2006-09-24 05:33:41 · answer #1 · answered by teroy 4 · 0⤊ 1⤋
You have to know what the chemical substance is? Find its atomic mass by adding the mass of each atom in the substance (e.g., if your molecule were CO2 you would add the mass of one C and two O). That will give you the number of grams in one mole of the substance. Divide the number of grams per mole into 80.6 g and you will have your answer.
Aloha
2006-09-24 12:34:35 · answer #2 · answered by Anonymous · 1⤊ 0⤋
no,of moles = weight / molecular wieght
you don't spesify what is the substance ,
2006-09-24 13:29:02 · answer #3 · answered by basimsaleh 4 · 0⤊ 0⤋
80.6 grams of what?
The process is simple -- divide the number of grams of substance by the atomic/molecular weight of the substance.
2006-09-24 12:40:26 · answer #4 · answered by Dave_Stark 7 · 0⤊ 0⤋