a mole of sodium has a mass of 23.0g
how many atoms are present in a 156g sample
so i said 156/23=6.78
6.78(6.02*10exp23)=4 081 560 atoms
2007-10-10 11:31:33 · 4 answers · asked by Josh j 1 in Science & Mathematics ➔ Chemistry
The considerations are impecable, there seems to be an error in the multiplication though. Yes, the result is 4.08 x10exp24, so there are 18 zeros missing to the right of the number you wrote.
2007-10-10 11:40:01 · answer #1 · answered by Manuelon 4 · 0⤊ 0⤋
That looks correct to me. Grams of substance divided by molar mass equals moles. This multiplied by Avogadro's number should equal the number of atoms.
2007-10-10 11:36:17 · answer #2 · answered by Simonizer1218 7 · 0⤊ 1⤋
i do no longer comprehend what ingredients yet go take a u . s . stress so day and additionally you will scent all the manure lots of the farmers unfold on the fields. If I had to assert a nutrition it would be beans without the beano.
2016-12-14 13:46:29 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Looks right to me.
2007-10-10 11:35:55 · answer #4 · answered by Girl 1 · 0⤊ 1⤋