NaCI, Ag3N, Fe2O3.
This is my AS level Chemistry homework, I'm struggling to calculate the atoms, can someone please help, thanks.
2007-09-08 10:03:44 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
atoms per molecule: add the subscripts
NaCl : 1 Na and 1 Cl = 2
Ag3N : 3 Ag and 1 N = 4
Fe2O3 : 2 Fe and 3O = 5
2007-09-08 10:08:31 · answer #1 · answered by skipper 7 · 1⤊ 0⤋
The second two are easy. Just count the symbols, and if a symbol has a subscript, count that number instead.
So, for Ag3N, there is one nitrogen and three silvers. So four atoms total.
For Fe2O3, there are three oxygens and two irons, so five.
NaCl is tricky. The answer for this level of chemistry is two...one sodium, one chlorine. NaCl is a salt, though, and technically doesn't exist as single sodium-chloride elemets...it exists is tremendous matrices of salt. But for your purposes, I'm sure two will do just fine. I hope this has helped you!
2007-09-08 10:09:30 · answer #2 · answered by BLLYRCKS 5 · 1⤊ 0⤋
NaCl - two atoms one each of sodium and chlorine
Ag3N - four atoms three of silver and one of nitrogen
Fe2O3 - five atoms two of iron and three of oxygen.
2007-09-08 10:08:33 · answer #3 · answered by lenpol7 7 · 1⤊ 0⤋
NaCl - 2
Ag3N - 4
Fe2O3 -5
total = 11
2007-09-08 10:14:24 · answer #4 · answered by medimom 2 · 0⤊ 0⤋