Question

What is the maximum number of moles of Co2 that could be obtained from the carbon in 4 moles of Ru2(CO3)3 ?

Answer 1

Ru2(CO3)3 = Ru2O3 + 3 CO2If one mole of Ru2(CO3)3 gives 3 moles of CO2 then four mole will give 4x3=12 moles.

Answer 2

That could be obtained from the carbon in 4 moles of Ru(CO3)3 ,4×3=12