a] 6.022x10^23 carbon atoms
b] 26.0 grams of iron
c] 12.01 grams of carbon
d] 65.38 grams of zinc
2007-05-11 17:20:05 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
b) 26.0 grams of iron ( 26.0 g /55.847 =0.465 mole )
a)1 mole of an element corresponds to Avogadro number ( 6.02 x10^23 )>> 1 mole
c) 12.01 is the molar mass of carbon >> 1 mole
d ) 65.38 is the molar mass of zinc >> 1 mole
2007-05-11 17:23:15 · answer #1 · answered by Anonymous · 0⤊ 0⤋
One mole is equivalent to one molecular weight expressed in grams .Here, 26.0grams of iron is not one mole as the molecular wt. of iron is 55.845 Gms.. All others are equal to one mole.
Hence, the answer is "b".
2007-05-12 01:05:49 · answer #2 · answered by sb 7 · 0⤊ 0⤋
(b) is incorrect
Standard atomic weight 55.845 g/mol
hence 1 mol of Iron weights 55.845g
(a) denotes Avogadro's number of carbon atoms
(c) is the correct weight for a mol of C
(d) is the correct weight for a mol of Zn
2007-05-12 00:24:05 · answer #3 · answered by Orinoco 7 · 0⤊ 0⤋
b)
One mole of iron is 55.84 grams
2007-05-12 00:23:58 · answer #4 · answered by Anonymous · 0⤊ 0⤋