Mole ConceptMedium

Question

Given that the abundances of isotopes 54Fe, 56Fe and 57Fe are 5%, 90% and 5% respectively, the atomic mass of Fe is

Options

A.55.85
B.55.95
C.55.75
D.56.05

Solution


= 54 × 0.05 + 56 × 0.90 + 57 × 0.05 (where is atomic mass of Fe)
= 55.95

Create a free account to view solution

View Solution Free
Topic: Mole Concept·Practice all Mole Concept questions

More Mole Concept Questions

When burnt in air, a 12.0 g mixture of carbon and sulphur yields a mixture of CO2 and SO2, in which the number of moles ...An organic compound "P" of molecular formula gives positive lodoform test but negative Tollen's test. When "P" is treate...The Ksp of Ag2CrO4, AgCl, AgBr and AgI are respectively, 1.1 × 10-12, 1.8 × 10-10,. 5.0 × 10-13, 8.3 &#21...The solubility of Mg(OH)2 is S moles/litre. The solubility product under the same condition is...In a textile mill, a double effect evaporator system concentrates weak liquor containing 4% (by mass) caustic soda to pr...