PLEASE HELP The arrows in the chart below represent phase transitions.Three bars are shown labeled Solid, Liquid, and Gas. They are connected by arrows labeled 1 to 6. Arrow 1 points from liquid to gas; arrow 2 from solid to liquid, arrow 3 from solid to gas, arrow 4 from gas to liquid, arrow 5 from liquid to solid, and arrow 6 from gas to solid.

Which arrows represent the phase transitions in which heat energy is gained?
1, 2, and 3
2, 3, and 5
3, 4, and 5
4, 5, and 6

Answers

Answer 1

Answer:

1, 2, and 3

hope it helps next time upload with picture

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In a 0.01 M solution of HCl, Litmus will be

Answers

In a 0.01 M solution of HCl, Litmus will be red. Litmus paper will turn into red in acidic conditions. Hydrochloric acid is an acid. Litmus is an indicator for acidity and alkalinity made from inchens.

Explanation:

A solution with pH less than 7 will be acidic in nature and it will change color of blue litmus into red.

For example, HCl is a strong acid as it dissociates to give hydrogen ions and chlorine ions.

A solution with pH more than 7 will be basic in nature and it will change color of red litmus into blue.

A solution with pH equal to 7 will be neutral in nature and it will not change the color any litmus paper.

Thus, we can conclude that in a 0.01 M solution of HCl, litmus will be red.

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Answers

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What is the very small center core of an atom is called?

Answers

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Why does the addition of acid increase the solubility of calcium phosphate? a. It decreases the phosphate ion concentration, forcing the equilibrium to the right. b. It increases the phosphate ion concentration, forcing equilibrium to the left. c. It decreases the phosphate ion concentration, forcing the equilibrium to the left. d. It increases the phosphate ion concentration, forcing the equilibrium to the right. e. It decreases the calcium ion concentration, forcing the equilibrium to the right. f. It increases the calcium ion concentration, forcing the equilibrium to the right. g. It decreases the calcium ion concentration, forcing the equilibrium to the left. h. It increases the calcium ion concentration, forcing equilibrium to the left.

Answers

Answer: c. It decreases the phosphate ion concentration, forcing the equilibrium to the left.

Explanation:

The calcium phosphate in water is dissociated according to the following equilibrium:

Ca₃(PO₄)₂ ⇄ 3Ca²⁺ + 2PO₄³⁻

A neutralization reactionis one in which an acid reacts with a base. In the reaction a salt is formed and in most cases water is formed.

Phosphate is the complementary base of phosphoric acid, so when adding acid to the solution, we will neutralize the phosphate present according to the following reaction:

PO₄³⁻ + 3H⁺ ⇄ H₃PO₄

Therefore, when adding acid we increase the solubility of calcium phosphate since we are neutralizing the phosphate present in the salt, decreasing the concentration of phosphate, displacing the first equilibrium shown to the left and favoring the dissolution of calcium phosphate.

Final answer:

The addition of acid to calcium phosphate decreases the phosphate ion concentration, causing a shift in equilibrium to the right, resulting in increased solubility of calcium phosphate.

Explanation:

The addition of acid increases the solubility of calcium phosphate because it decreases the phosphate ion concentration. This process forces the equilibrium to shift to the right, as per Le Chatelier's principle. This principle states that when a stress (in this case, acid addition leading to decreased phosphate ion concentration) is applied to a system at equilibrium, the system responds by shifting in a direction that minimizes that stress. In this case, the equilibrium shifts to the right, resulting in the dissolution of more calcium phosphate to replace the phosphate ions that were removed due to the addition of acid.

Learn more about Solubility of Calcium Phosphate here:

brainly.com/question/36029783

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