Which has minimum number of atoms of oxygen
Asked by admin @ in Chemistry viewed by 383 People
Which has maximum number of atoms of
oxygen(a) 10 ml H2O(l)(b) 0.1 mole of V2O5(c) 12 gm O3(g)(d) 12.044 ×1022 molecules of CO2
Answered by admin @
1 mole of H2O contains Avogadro number of oxygen atoms.
1 mole of H2O is 22400ml, here 10ml is a very less quantity relatively and hence is not the answer.
NOTE:
Actually 1 mole of H2O contains Avogadro number of H2O molecules. But since each H2O molecule has only 1 Oxygen atom, we say that
number of H2O molecules = number of oxygen atoms
We may also say that the number of Oxygen atoms is directly proportional to the product of number of moles and number of Oxygen atoms in the molecule.
(b)===>0.1 x 5 = 0.5
(c)number of moles of O3 = 12/48 = 0.25
===>0.25 x 3 = 0.75
(d)6 x 10^23 molecules ------> 1 mole
12 x 10^22 molecules ------> 0.2 mole
===>0.2 x 2 = 0.4
Therefore the maximum number of oxygen atoms are present in 0.1 moles of V2O5
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