Question

find
mass of cuco3
required to . produce
11.2 litre of co2
(STP)​

Answer 1

CuCO3 gives CuO + CO2
So 1 mole of CuCO3 gives 1 mole of CO2 ie 22.4 litres of CO2
Therefore For 11.2 moles of CO2 0.5 moles of CuCO3 is required
Molecular weight of CuCO3 = 63 + 12 +48 = 123
Weight of half mole = 123/2 = 61.5gm

Hope you understand this

Answer 2

Answer:

molecular weight of copper can be taken as 63.5 or even 64.