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Author Archives: Anonymous

Activation energy can best be described as

Activation energy can best be described as

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A solid sample at room temperature spontaneously sublimes fo…

A solid sample at room temperature spontaneously sublimes forming a gas. This change in state is accompanied by which of the changes in the sample?

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3120kJ/mol of heat is released in the reaction of benzene (C…

3120kJ/mol of heat is released in the reaction of benzene (C6H6)  with oxygen gas.  Is this reaction exothermic or endothermic?

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How many grams of fluorine (F2) are required to produce 40.0…

How many grams of fluorine (F2) are required to produce 40.0 grams of FeF3 from the reaction shown?               2 Fe + 3F2 → 2 FeF3

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In the following reaction which species is being oxidized an…

In the following reaction which species is being oxidized and which is being reduced? 2 Cr (s) + 3 Cl2 (g) → 2 CrCl3 (s)

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How many grams of CO2 will be produced when 9.00 grams of Na…

How many grams of CO2 will be produced when 9.00 grams of Na2SO4 react according to the balanced reaction shown?               Na2SO4 + 2 C → Na2S + 2 CO2

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Reaction rates are determined by all of the following factor…

Reaction rates are determined by all of the following factors except

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The position of the equilibrium for a system where K = 4.6 ×…

The position of the equilibrium for a system where K = 4.6 × 10-15 can be described as being favored to _____; the concentration of products is relatively _____.

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For the reaction of zinc with silver nitrate,  2.9 g of silv…

For the reaction of zinc with silver nitrate,  2.9 g of silver was produced.  The reaction should have theoretically produced 3.5 g.  What is the percent yield?

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In a precipitation reaction the insoluble product can be ide…

In a precipitation reaction the insoluble product can be identified by the symbol ________.

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