how many atoms of hydrogen are in 10.586 grams of ammonia at STP?
is the answer 1.12 x 10^24?
2006-08-26 12:15:23 · 3 answers · asked by bookwurmgurl 2 in Science & Mathematics ➔ Chemistry
Ammonia is NH3, so the molecular weight is 17 (17.0304 according to Wikipedia).
So 10.586 g of ammonia should be 0.62 mole.
A mole is 6.022e23 particles, and we have 3 hydrogen atoms per molecule, so we should have 1.12e24 atoms of hydrogen.
Looks like you nailed that one perfectly.
2006-08-26 12:28:12 · answer #1 · answered by Vincent G 7 · 1⤊ 0⤋
10.586/(molecular weight of ammonia) * avagadro's number
10.586/17.032 * 6.022*10^23 *3
1.123*10^24
gm/(gm/mol) * atoms/mol *mol H/mol NH3
looks like I get the same answer you did
congratulations
2006-08-26 12:36:49 · answer #2 · answered by enginerd 6 · 1⤊ 0⤋
can you show your math?
2006-08-26 12:25:54 · answer #3 · answered by RICK T 1 · 0⤊ 0⤋