Problem PageQuestion Gaseous ethane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 8.42 g of ethane is mixed with 48. g of oxygen. Calculate the minimum mass of ethane that could be left over by the chemical reaction. Round your answer to significant digits.

No ethane will be left after reaction

Explanation:

Balanced equation:

According to balanced equation, 7 moles of react completely with 2 moles of

Molar mass of = 32 g/mol and molar mass of ethane = 30.07 g/mol

So, 48 g of   = of = 1.5 moles of

Hence, 1.5 moles of react completely with moles of or 0.43 moles of  

So, mass of reacts completely with 1.5 moles of = = 12.9 g

As only 8.42 g of ethane has been placed in reaction mixture therefore no ethane will be left after reaction.