which of the folloning would wiat the most explain (a)1 mole of H2O (b)1 mole of CO2 (c)1 mole of NH3 (d)1 mole of CO

Asked by  | 21st Nov, 2013, 06:16: PM

Expert Answer:

1 mole of carbon dioxide CO2 is the heaviest among 1 mole of H2O, NH3 and CO.

Atomic mass unit is a quantity by which the molecular mass of a substance can be defined most precisely. It is the mass of one molecule of a substance. It is calculated by summing up the atomic masses of all the elements present in that particular molecule.

Here,

(a) The molecular mass of H2O can be calculated as follows:

 

H2O = 2 X 1 + 16 = 18 u

 

(b) The molecular mass of CO2 can be calculated as follows:

 

CO2 = 12 + 16 X 2 = 44 u

 

(c) The molecular mass of NH3 can be calculated as follows:

NH3 = 14 + 3 X 1 = 17 u

 

(d) The molecular mass of CO can be calculated as follows:

 

CO = 12 + 16 = 28 u

 

 Therefore, 1 mole of carbon dioxide CO2 (44 u) is the heaviest among 1 mole of H2O (18 u), NH3 (17 u) and CO (28 u).

Answered by Hanisha Vyas | 25th Nov, 2013, 11:43: AM

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