What is the product of the chemical reaction when copper(ll)nitrate is heated strongly?

When copper(II) nitrate is heated strongly, it decomposes to form copper(II) oxide, nitrogen dioxide gas, and oxygen gas. The balanced chemical equation for this reaction is:

2Cu(NO3)2(s) → 2CuO(s) + 4NO2(g) + O2(g)

So, the products of the chemical reaction when copper(II) nitrate is heated strongly are copper(II) oxide, nitrogen dioxide gas, and oxygen gas.

Copper(II) oxide and nitrogen dioxide