Question

Consider the reactionC (s) + O2 (g) ⎯→ CO2 (g)18 g of carbon was burnt in oxygen. How many moles of CO2 is produced?

Answer 1

Answer:

Comparing stoichiometric coefficients

1 mole of C= 1 mole of CO2

so, we know that moles= given mass/molar mass

18/12 = x/44

from this we get x=66g, now calculate moles of CO2 by dividing 66 by 44-> 1.5

Answer 2

answer is c)72g  

I did the unit test and got a 100%