How many moles of CO2 can form from 5.1 moles of C3H8 and abundant O2 in the equation: C3H8 + 5O2 -> 3CO2 + 4H2O

15.3 moles of CO₂ formed.

Explanation:

Given data:

Number of moles of CO₂ formed = ?

Number of moles of C₃H₈ react = 5.1 mol

Solution:

Chemical equation:

C₃H₈ + 5O₂       →     3CO₂ + H₂O

Now we will compare the moles of CO₂ with C₃H₈.

                          C₃H₈         :          CO₂

                              1            :            3

                             5.1          :         3/1×5.1 = 15.3 mol  

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

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