The number of moles of the hydrocarbon gas is 0.081. FRom this the molecular weight is calculated as 28 g/mol. The formula of hydrocarbon having this molecular weight is ethene, C₂H₄.
<h3>What is ethene?</h3>
Ethene is an unsaturated hydrocarbon thus it have a double bond with the formula C₂H₄. It is written as CH₂=CH₂ .
It is given that the pressure of the system is 53.4 mmhg that is 0.69 atm and temperature of the system is 55.3 degree celsius that is 328.3 K and volume is 3.14 L.The universal gas constant is 0.082 L atm (K mol). Apply these values in ideal gas equation.
PV = nRT
n = PV/RT
= (0.69 atm × 3.14 l) / (0.082 L atm (K mol) ) × 328.3 K
= 0.08 mole.
The molecular weight of this gas is 2.28 /0.08 =28 g/mol.
Hence, a hydrocarbon gas with a mass of 28 g/mol is ethene C₂H₄ .
To find more about ethene, refer the link below:
brainly.com/question/2720922
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