20 cm^3 of ethane (C2H6) was exploded with 95 cm^3 of oxygen . What volume of oxygen was left unreacted? (All volumes were measured at room conditions)
2C2H6(g) + 7O2(g) -> 4CO2(g) + 6H2O(l)
(2)
200 cm^3 of hydrogen was exploded with 200cm^3 of oxygen . What is the final volume if all volumes were measured at (a) 25C and 1 atmosphere (b) 105C and 1 atmosphere.
更新1:
25C and 105C,, the C means degree celsius ((temperature))