Help please its abt thermal decomposition

3. The following questions are based on thermal decomposition of metal nitrate

a) Tom heated Mg (NO3)2 in a boiling tube. Which gases are given off?

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b) Write the balanced chemical equation of thermal decomposition of Mg (NO3)2

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c) Consider the following metal nitrates.

Zn (NO3)2 , NaNO3 , Cu (NO3)2 , Pb (NO3)2

Which metal nitrate will decompose easily?

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