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gladu [14]
3 years ago
5

A student puts a glass of water in the freezer. Later, he notices ice forming on the surface of the water. Which property of wat

er best explains why ice forms on its surface?
A. Ice has more surface tension than liquid water.
B. Ice is less dense than liquid water.
C. Ice has a lower freezing point than liquid water.
D. Ice is more cohesive than liquid water.
E. Ice can dissolve more oxygen than liquid water.
Chemistry
2 answers:
Blababa [14]3 years ago
6 0

Answer: Option (C) is the correct answer.

Explanation:

When a glass of water is held in the refrigerator then kinetic energy of water molecules starts to decrease as there is less temperature in the freezer.

As a result, the water starts to convert into ice because kinetic energy of water molecules converts into potential energy.

Thus, we can conclude that out of the given options, the property ice has a lower freezing point than liquid water best explains why ice forms on its surface.

Karolina [17]3 years ago
4 0
C.ice has a lower freezing point than liquid water

hope this helps
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an unknown amount of mercury (ii) oxide was decomposed in the lab. mercury metal was formed and 4.50 l of oxygen gas was release
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<h3>Steps</h3>

chemical reaction

2HgO ⟶ 2Hg + O₂

the moles of O₂

pV = nRT

n = (pV)/(RT)

Data:

p = 0.970 atm

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Calculation:

n = (0.970 × 4.500)/(0.082 06 × 390.0)

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the moles of HgO

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Moles of HgO = 0.1364 mol O₂ × (2 mol Hg/1 mol O₂)

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the mass of HgO

Mass of HgO = 0.2728 mol HgO × (216.59 g HgO/1 mol HgO)

Mass of HgO = 59.1 g HgO

<h3>What is the name of HgO?</h3>

For the creation of various organic mercury compounds and specific inorganic mercury salts, mercury(II) oxide, or HgO, serves as a source of elemental mercury.

This red or yellow crystalline substance is also utilised in mercury batteries and zinc-mercuric oxide electric cells as an electrode (combined with graphite).

<h3>What is the purpose of mercury oxide?</h3>

Mercuric oxide is a colourless, crystalline powder that ranges from yellow to orange-yellow.

It serves as a seed protectant, a pigment, a preservative, and an ingredient in alkaline batteries and cosmetics.

<h3>Is there a combination of mercury oxide?</h3>
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  • An intimate blend of metallic mercury and mercuric oxide rather than a genuine compound.

learn more about mercury oxide here

brainly.com/question/3235037

#SPJ4

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