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

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.