Question

By decomposition of 25 g of Coco
the amount of CoO produced will be
?​

Answer 1

The mole ratio of the equation is 1:1:1 This is 1 mole of CaCO3 yields 1 mole of Cao and 1 mole of CO2

so we have to calculate the moles of CaCO3:

moles=mass/molar mass

moles=5/100

         =0.05 moles

so this means that the moles of the Cao produced 0.05 moles

mass=moles*molar mass

        =0.05*56

        =2.8 grams