Hey there!
Malachite: Cu₂CO₃(OH)₂
Cu: 2 x 63.546 = 127.092
C: 1 x 12.01 = 12.01
O: 5 x 16 = 80
H: 2 x 1.008 = 2.016
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221.118 g/mol
The molar mass of malachite is 221.118 g/mol.
Hope this helps!
