Question

The mass of Co2 obtained when 2grams of pure lime stone is calcined

Answer 1

CaCO3 ➡️ Co2 + CaO.

100 gm ➡️ 44gm

2 gm ➡️ x

So, x = 0.88 gm is your answer.

Answer 2

Answer:0.88 g

Explanation:CaCO3---------CO2+CaO

CaCO3 weight: 100grams

CO2 weight: 44grams

100g--------44g

   2g-------- x

x = 44 × 2÷100

x = 88 ÷ 100 = 0.88 grams...