Question

8.2 grams of calcium nitrate is decomposed by heating according to the equation

\[\ce{2Ca(NO3)2 -> 2CaO + 4NO2 + O2}\]

Calculate the following:

Mass of CaO formed

[Atomic weights: Ca - 40 , N - 14, 0 - 16]

Answer 1

328 g of calcium nitrate produces

2 × 56 g of CaO

8.2 g of calcium nitrate produces

`2 × 56 × 8.2/328`

= 2.8 g of CaO