Final answer:
The molar composition of the gas mixture can be determined by converting weight percentages to moles using their individual molar masses. The mass of each component is found by multiplying the total mass of the gas mixture by the respective weight percent. Properties of the hydrocarbons and the presence of water have both practical and chemical implications.
Step-by-step explanation:
To find the molar composition of the gas, you would first convert the weight percentages into moles based on the molar masses of methane (CH₄), ethane (C₂H₆), ethylene (C₂H₄), and water (H₂O). For the mass of each component, you would take the given weight percentage and multiply it by the total mass of the gas mixture to find the mass of each component in grams.
For the properties, methane is a simple hydrocarbon with a molar mass of 16.04 g/mol. Ethane is a two-carbon chain hydrocarbon with a molar mass of 30.07 g/mol, and ethylene is a two-carbon chain with a double bond, with a molar mass of 28.05 g/mol. Water in the gas can lead to issues like corrosion or the formation of hydrates that can block pipelines.