Molar mass is the summation of the atomic mass of the individual atoms. The molar mass of KBr•7H₂O is 244.99.
Atomic mass or weight is the number of protons and neutrons in the atom of the individual element. The atomic masses are used to calculate the molar mass of the compound.
The compound KBr•7H₂O: 1 K + 1 Br + 14 H + 7O
Inserting the atomic masses of the individual atoms as:
= 1 (39.09) + 1 (79.90) + 14 (1.00) + 7(16)
= 39.09 + 79.90 + 14.00 + 112
= 244.99
Therefore, 244.99 is the molar mass of KBr•7H₂O.
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