Gaseous ethane  CH3CH3  will react with gaseous oxygen  O2  to produce gaseous carbon dioxide  CO2  and gaseous water  H2O . Suppose 27. g of ethane is mixed with 38.3 g of oxygen. Calculate the minimum mass of ethane that could be left over by the chemical reaction. Round your answer to  2  significant digits.

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Units and Dimensions

Dimensions are the basic concepts of the measurement of quantities. Units are the means of expressing the dimensions. For instance, an area has a dimension of L2 and a unit of m2.