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3 years ago

An endothermic solution process is described by which of the following?

Chemistry

1 answer:

Temka [501]3 years ago

4 0

Answer:

a. ΔΗ > 0, solution feels cold

Explanation:

Hello,

In this case, endothermic process are those in which we can find that the products have more energy than the reactants, therefore energy is absorbed, for which the following equation:

$\Delta H=\Delta H_{products}-\Delta H_{reactants}$

Must be greater than 0 (positive) thereby, for a solution process we find that the solution feels cold, in such a way, answer is a. ΔΗ > 0, solution feels cold.

Regards.

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A Group 2 metal with an electron configuration of [Ne]3s2 combines with fluorine (F2) to

lidiya [134]

The molar mass of the product is equal to 62g/mol.

<h3>Mole calculation</h3>

To calculate the molar mass of a compound it is necessary to have knowledge of the atomic mass of all the elements involved.

In the case of the question, we have the reaction between flourine and magnesium, which represents the element of group 2 with the presented electronic configuration.

Thus, we have the following reaction:

$Mg^{+2} + 2F^{-1} = MgF_2$

So, just add the molar masses, having:

$MM_Mg = 24.3g/mol\\MM_F = 19g/mol$

$24.3 + 19 + 19 = 62.3g$

So, the molar mass of the product, round to the nearest tenth, is equal to 62g/mol.

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svetlana [45]

Answer:

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Explanation:

Hello!

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