Question

Find the formula mass of Cu[NO3]2​

Answer 1

Explanation:

Mass

Cu=63,

N=14,

O=16.

Cu(NO3)2=63+(14+(16)*3)*2

=63+28+96=187

this is your answer.

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Answer 2

The formula mass of $Cu(NO_3)_2$ is 187.52 g

Explanation:

Molar mass is the mass of 1 mole of the molecule. It is calculated by adding masses of all the atoms in the given molecule.

For $Cu(NO_3)_2$ , it contains one atom of copper , 2 atoms of nitrogen and 6 atoms of oxygen.

Mass of copper = 63.5 g/mol

Mass of nitrogen= 14.01 g/mol

Mass of oxygen = 16.00 g/mol

Thus mass of  $Cu(NO_3)_2$= $1\times 63.5+2\times 14.01+6\times 16.00=187.52g$

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