Question

Atomic number (Z) of Iron, Fe is 26, Atomic mass 56. Using the above information answer the following.

(a) 1 mole of iron weighs …………….. grams.

(b) 7.4 mole of iron contains …………… atoms.

(c) 7.4 moles of iron weighs ……………. grams.

(d) 1 gram of iron contains ……………... atoms.

(e) 1 atom of iron weighs ………………. grams.

(f) 1.2 × 10²⁴ atoms of iron would be …………….. moles of iron.

(g) 1.2 × 10²⁴ atoms of iron weigh …………….. grams.

Answer 1

(a) 56 g

(b)

(c) 414.4 g

(d)

(e)

(f) 1.9923 moles

(g) 111.44 g