The following thermochemical equation is for the reaction of ethane(g) with oxygen(g) to form carbon dioxide(g) and water(g). 2C2H6(g) + 7O2(g)4CO2(g) + 6H2O(g) H = -2.86×103 kJ When 6.74 grams of ethane(g) react with excess oxygen(g), kJ of energy are .

Thus of energy is produced

Explanation:

To calculate the moles :

According to stoichiometry

2 moles of ethane produce energy =

Thus 0.22moles of ethane produce energy =

Thus of energy is produced

samuel de champlain. in 1608, king henry iv sponsored pierre dugua, sieur de mons and samuel de champlain as founders of the city of quebec with 28 men. this was the second permanent french settlement in the colony of canada.