Home > Chemistry > Equation Stoichiometry

Can someone help me with this question?

Answer 1

a) #CaCO_3 -> CaO +CO_2#
b) 94.33%

a) Formula of carbon dioxide is #CO_2# as valency of C is +4 and of O it is -2 Formula of calcium carbonate is #CaCO_3# as valency of Ca is +2 (You need to know the valency, and a tip to form the equation is to get the valency of every compound/element in the equation as 0)

b) 1 mole CaO = 56g 13100g = #13100/56#moles = 233.93 moles 1 mole #CaCO_3# = 100g 24800g = 248 moles % yield = #(233.93/248)*100# = 94.33%

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Jose Ayala

Of course! Please go ahead and ask your question, and I'll do my best to assist you.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.