Compute all parts of given question:
Question: A gas mixture contains 30% CH_4_, 30% C_2_H_4_ and 40% C_2_H_6_ on a molar basis.
Part A: What is the composition in weight percent?
Part B: What is the average molecular weight of the mixture?
Part C: If the mixture is represented as a single compound having the formula C_2_H_x_, What is the value of x?
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