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Scilla [17]
3 years ago
12

When potassium iodide dissolves in water, the beaker becomes warm. Which statement best describes this process? A) The ΔHsolvati

on is exothermic and the overall ΔHsolution is exothermic. B) The ΔHsolvation is exothermic but the overall ΔHsolution is endothermic. C) The ΔHsolvation is endothermic but the overall ΔHsolution is exothermic. D) The ΔHsolvation is endothermic and the overall ΔHsolution is endothermic.
Chemistry
1 answer:
iogann1982 [59]3 years ago
4 0

The answer for this pronles mis "a"  The ΔHsolvation is exothermic and the overall ΔHsolution is exothermic.

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What has the same number of valence electrons in the outermost shell?
algol [13]

Answer:

Groups

Explanation:

Elements with the same number of valence electrons are found in the same column(group) of the Periodic Table.

4 0
3 years ago
How does a balanced chemical equation satisfy the law of conservation of mass
ELEN [110]
Every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. ... When an equal number of atoms of an element is present on both sides of a chemical equation, the equation is balanced.
4 0
3 years ago
Rank the following 0.100 M solutions in order of increasing H3O+ concentration:
Inessa05 [86]

Answer:

HCN < HOCl < HF  

Explanation:

The larger the Kₐ value, the stronger the acid.

6.2 × 10⁻¹⁰ < 4.0 × 10⁻⁸ < 6.3 × 10⁻⁴

   HCN      <     HOCl    <      HF

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5 0
3 years ago
A solution of pH 5 is diluted 100 times. Find the pH of the resulting solution.
liq [111]
First, we calculate of the concentration of the H+ ions in the solution from the pH given. Then, calculate the new concentration after dilution. Calculation are as follows:

pH = -log[H+]
5 = -log[H+]
[H+] = 1 x 10^-5 M

M1V1 = M2V2
<span>1 x 10^-5 M (V1) = M2(100V1)
</span>M2 = 1 x 10^-7

pH =  -log[<span>1 x 10^-7</span>]
pH = 7

3 0
3 years ago
Read 2 more answers
Consider the three statements below. Which numbered response contains all the statements that are true and no false statements?
vladimir1956 [14]

Answer:

a) I, II, and III

Explanation:

For the first statement;

Solvation, is the process of attraction and association of molecules of a solvent with molecules or ions of a solute. if the solvent is water, we call this process hydration.

This means the statement is TRUE.

For the second statement;

The negatively-charged side of the water molecules are attracted to  positively-charged ions. In the case of water, the oxygen end is the negatively charged side of water. This means the statement is TRUE.

For the third statement;

The positively-charged side of the water molecules are attracted to the negatively-charged chloride ions. In the case of water, the hydrogen end is the positively charged side of water. This means the statement is TRUE.

Going through the options, we can tell that the correct option is option A.

6 0
3 years ago
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