If sucrose (c12h22o11) is composed of glucose (c6h12o6) and fructose (c6h12o6) shouldn't the molecular formula be (c12h24o12). what happened to the missing hydrogen and oxygen atoms?

This is a type of condensation reaction.

Explanation:  Condensation reactions are the reactions in which two small molecules combine to form a larger molecules producing a small molecule such as ,   etc. as a byproduct.

Glucose( and Fructose() are the simplest carbohydrates and when they combine to produce Sucrose() and release water() as a byproduct.

n2(g) + 3h2-> 2nh3(g)   this is the balanced equation

note the mole ratio between n2, h2 and nh3.   it is 1 : 3 : 2   this will be important.

moles n2 present = 28.0 g n2 x 1 mole n2/28 g = 1 mole n2 present

moles h2 present = 25.0 g h2 x 1 mole h2/2 g = 12.5 moles h2 present

based on mole ratio, n2 is limiting in this situation because there is more than enough h2 but not enough n2.

moles nh3 that can be produced = 1 mole n2 x 2 moles nh3/mole n2 = 2 moles nh3 can be produced

grams of nh3 that can be produced = 2 moles nh3 x 17 g/mole = 34 grams of nh3 can be produced

note:   the key to this problem is recognizing that n2 is limiting, and therefore limits how much nh3 can be produced.

- both b and d.

-since b and d are the closest coastlines then that makes it the most affected.

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