1.

Write the formula of the Aluminium Nitrate compounds and calculate the molecular mass.

Answer»

Aluminium Nitrate : Al(NO3)3
Molecular mass = (1 x atomic mass of Al + 3 (1 × atomic mass of N + 3 × atomic mass of O)
= 26.9 + 3(14 + 3 × 16)
= 26.9 + 3 × 62
= 26.9 + 186
= 212.9 g/mol



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