Sunday, May 24, 2009

HEY I LOVE YOUR DIMPLE WHEN YOU SMILE!


Joan, my classmate from MicroBiology Module. Forever the one asking me to cabot. Badbadbad, very bad right.

Hiiiiii. I am Happy, but not that very the happy for now.
First, I'm almost done with my revision for 1 problem, however...
I am stuck with this 2Question:

(i) Lithium oxide is used aboard the space shuttle to remove water from the air supply according to the equation: Li2O(s) + H2O(g) = 2LiOH(s)

If 80.0 kg of water is to be removed and 65 kg of Li2O is available, which reactant is limiting? How many kg of excess reactant remain?

Answer: Li2O is the limiting reagent; 41kg of water remain.

(ii) Aluminum metal reacts vigorously with iron(III) oxide. The equation for the reaction is: 2 Al(s) + Fe2O3(s) = Al2O3(s) 2Fe(l)

How many grams of Fe can be form from a reaction mixture containing 30.0 g Al and 90.0 g of Fe2CO3?

Answer: 62.0 g Fe (Al is the limiting reagent)

Answers are there, ya I know BUT I WANT TO KNOW THE STEPS TO GETTING THE ANSWER! :(

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