Question

molecular mass of 2h2o​

Answer 1

Answer:

Molar mass H2O = (2×atomic mass H) + (1×atomic mass O) = (2×1.00794) + (1×15.9994) = 18.02 • 1 H2O molecule has a mass of 18.02 amu. 1 mole of H2O molecules has a mass of 18.02 grams.

Answer 2

The molecular mass of 2H2O is 36 a.m.u.

• The molecular mass can be defined as the sum of the individual molecular weights of the elements present in the compound.
• A total of 4 hydrogens and 2 oxygens are present in the given compound.
• The Atomic masses of Hydrogen and Oxygen are 1 and 16 respectively.
• The molecular mass of 2H2O is,

=> 2 ( 2 x (atomic mass of hydrogen + 1 x (atomic mass of oxygen) ),

=> 2 ( 2 + 16 ),

=> 2 ( 18 ) = 36 A.M.U

• Hence, the molecular mass of 2H2O is 36 Atomic Mass units.