My heart's saying that Chelsea's gonna win but my head is saying Barca.. Haha.. Good luck then..

Let Bosingwa play on the left so he can stop Messi.. Coz Messi loves to cut inside..

The team score most away goals proceed if the aggregate remain the same.

Let me try to help you.

After the 2 legged match, add up all the goals scored by both teams in both matches.

In this case its 1-1 since Chelsea & Barca only scored 1 each in those 2 matches.

Because the total goals scored by both teams are equal (1 in this case), we look at who scored the most away goals.

In this case Barca scored 1 away goal VS 0 away goal for Chelsea.

Conclusion- Barca gone thorugh on away goals.

Hope this helps.