Q. Given R = 8.314 J K - 1 M o l - 1 , the work done during combustion of 0.090 kg of ethane (molar mass = 30) at 300 K is a. -187 kJ b. 18.7 kJ c. 6.234 kJ d. -6.234 kJ Share with your friends Share 12 Mohan Kumar answered this Dear student Thus option (b) is the correct option. Regards 8 View Full Answer