Question

calculate the relative molecular mass of water (h2o)​

Answer 1

Answer:

It is the mass of a molecules of the compound in comparison to the mass of an atom of C-12 taken as 12.

For H2O molecule -

Relative mass of hydrogen (H) = 1u.

Relative mass of oxygen (O) = 16u.

According to the formula of water contains 2 hydrogen atoms,

So, relative mass of water = 2 *( 1u ) + 16u.

= 18u.

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