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ddd [48]
3 years ago
8

PLEASE ONLY SMART PEOPLE! 20 points

Biology
2 answers:
Dafna11 [192]3 years ago
7 0
More stirring might also increase the amount of sugar that dissolves, and different sugars might dissolve in different amounts, so to ensure a fair test you want to keep these variables the same for each cup of water.
Vanyuwa [196]3 years ago
3 0
The answer is B) DV. This is the answer because the temperature will effect the amount of sugar dissolved which is DV.
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Answer:

THE EQUILIBRIUM CONSTANT EXPRESSION Kc = \frac{[C2H5OH]}{[C2H5OC2H5]}

Explanation:

The equilibrium constant, Kc is an expression given by the ratio of the concentrations of the products over the reactants. TN.B: the activities of pure solids and liquids are equal to 1.

Kc = \frac{[products]^n}{[reactants]^n} where n= no of moles

Reaction equation:

2C2H5OH  \frac{conc H2SO4, 140^o}{}→ C2H5OC2H5

⇒ Kc = \frac{[C2H5OC2H5] [H2)]}{[C2H5OH]^2} but [H20] = 1

∴ Kc = \frac{[C2H5OH]}{[C2H5OC2H5]}

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