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
i ASKED IT BEFOR THEN SOMEONE ANSWERED
"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."
am i right or does that guy have point
2007-10-10 12:49:33 · 2 answers · asked by Josh j 1 in Science & Mathematics ➔ Chemistry
ok i just checked it and i get 4.08156 *10exp25
2007-10-10 13:01:27 · update #1
Sorry, he's right. But getting the right number, even if it has the wrong decimal point, means that you are answering the problem almost correctly.
2007-10-10 12:56:24 · answer #1 · answered by Frst Grade Rocks! Ω 7 · 1⤊ 0⤋
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 13:51:23 · answer #2 · answered by whiten 4 · 0⤊ 0⤋