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3 years ago

Which statement is true if the Hrxn of a reaction is positive?

Chemistry

2 answers:

erma4kov [3.2K]3 years ago

7 0

I think it is b..................................................

iren2701 [21]3 years ago

3 0

Answer: The correct answer is Option A.

Explanation:

Endothermic reactions are defined as the reactions in which potential energy of the reactants is less than the potential energy of the products. The total enthalpy change of the reaction $(\Delta H_{rxn})$ comes out to be positive. Energy is absorbed during this reaction.

$\Delta H_{rxn}=\Delta H_{products}-\Delta H_{reactants}=+ve$

Exothermic reactions are defined as the reactions in which potential energy of the products is less than the potential energy of the reactants. The total enthalpy change of the reaction $(\Delta H_{rxn})$ comes out to be negative. Energy is released during this reaction.

$\Delta H_{rxn}=\Delta H_{products}-\Delta H_{reactants}=-ve$

From the above information, the correct answer is Option A.

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11.35 g atoms of lead are in the sample.

What does density mean?

The density of an area refers to the quantity of things—which may include people, animals, plants, or objects—there are in it.
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A country's population density is calculated by dividing its total population by its area, expressed in square kilometers or miles.

We can calculate the volume of the cube by cubing the side of the cube.

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We can now determine the amount of lead in the cube by multiplying by the density. Because we know we have a 1.000 cubic centimeter and that lead has a density of 11.35 grams per cubic centimeter, we have 11.35 grams of lead.

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2 years ago

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3 years ago

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Neporo4naja [7]

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