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ololo11 [35]
4 years ago
15

Qualitatively estimate the relative melting points for each of the solids, and rank them in decreasing order. Rank from highest

to lowest melting point.
A. ammonia
B. calcium
C. chloride
D. quartz
Chemistry
1 answer:
baherus [9]4 years ago
3 0

Answer:

The order is

Quartz > Calcium > Ammonia > Chlorine

Explanation:

Among given compounds

Quartz is a covalent compound with extensive bondings and thus it will have highest melting point

Calcium is a metal so it will have strong metallic bonds thus will have high melting point, however less than quartz.

ammonia is a polar molecule with weak hydrogen bond as intermolecular interactions thus will have higher melting point than chlorine

chlorine is a non polar molecule with weak intermolecular london dispersion forces.

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Answer:

The Coriolis effect is an apparent deflection in the paths of moving objects caused by Earth's faster speed near the equator than near the poles. In the solar system, the greatest expression of this effect occurs in planetary atmospheres. On Earth, for example, the air around us moves freely above the ground.

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Veseljchak [2.6K]

Answer: last one

Explanation:

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What is the mass of 7.00 moles of H2O2
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Answer:

0.206 mol H₂O₂

General Formulas and Concepts:

<u>Chemistry - Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

7.00 moles H₂O₂

<u>Step 2: Identify Conversions</u>

Molar Mass of H - 1.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of H₂O₂ - 2(1.01) + 2(16.00) = 34.02 g/mol

<u>Step 3: Convert</u>

<u />7.00 \ g \ H_2O_2(\frac{1 \ mol \ H_2O_2}{34.02 \ g \ H_2O_2} ) = 0.205761 mol H₂O₂

<u>Step 4: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules and round.</em>

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8 0
3 years ago
What is the three properties of matter
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A solid, a liquid or a gas.
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Type the correct answer in the box. Express your answer to three significant figures. Iron(II) chloride and sodium carbonate rea
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Answer:

The reaction can produce 287 grams of iron(II) carbonate

Explanation:

To solve this question we must find the moles of iron(II) chloride that react. Using the chemical equation we can find the moles of iron(II) carbonate and its mass -Molar mass FeCO3: 115.854g/mol-

<em>Moles FeCl2:</em>

1.24L * (2.00mol / L) = 2.48 moles FeCl2

As 1 mol FeCl2 produce 1 mol FeCO3, the moles of FeCO3 = 2.48 moles

<em>Mass FeCO3:</em>

2.48mol * (115.854g / mol) =

<h3>The reaction can produce 287 grams of iron(II) carbonate</h3>
5 0
3 years ago
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