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svp [43]
3 years ago
8

An unknown gas is contained in a sealed container. Over time, the gas is gradually cooled until it becomes a solid. Determine wh

ich
statements accurately describe the graphic representation of the cooling process. Choose all of the correct answers.
es )
A)
The freezing point of the gas is 100°C.
B)
It will take 140 minutes for the gas to completely solidify.
C)
D)
As the gas changes state, the intermolecular attraction of the molecules
increases.
Droplets of the gas will begin to condense on the sides of the container at
125°C.
As the temperature of the gas decreases over time, the kinetic energy of
the molecules increase
E)
Chemistry
2 answers:
otez555 [7]3 years ago
7 0

Answer:

BCD

Explanation:

Alecsey [184]3 years ago
5 0

Answer:D molecular attraction increases as temp decreases

Explanation:A,B would require data not available. C is missing. The question is a mess.

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Which would have the highest first ionization energy?
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Thus, helium has the largest first ionization energy, while francium has one of the lowest.

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2 years ago
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In a chemical reaction, exactly 2 mol of substance A react to produce exactly 3 mol of substance B. 2 A ⟶ 3 B How many molecules
Harman [31]

Answer:

There will be produced 1.71 moles of B which contain 1.03×10²⁴ molecules

Explanation:

The example reaction is:

2A → 3B

2 moles of A produce 3 moles of B

If we have the mass of A, we convert it to moles and then, we make the rule of three: 29.2 g / 25.6g/mol = 1.14 moles

Therefore 2 moles of A produce 3 moles of B

1.14 moles of A will produce (1.14 . 3) / 2 = 1.71 moles of B are produced

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1 mol has NA molecules (6.02×10²³)

1.71 moles have (1.71 . NA) = 1.03×10²⁴ molecules

4 0
3 years ago
A solution is made by dissolving 15.5 grams of glucose (C6H12O6) in 245 grams of water. What is the freezing point depression of
sergij07 [2.7K]
From the equation; ΔTf = Kf × m
Where, Kf for water = 1.853 K kg/mole; m is the molarity = number of solute/amount of solvent in kg.
Glucose is the solute whose molecular mass is 180 g/mole and water is the solvent. 
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Amount of solvent in kg = 245/1000 = 0.245 Kg
Therefore; molarity = 0.0861/0.245 = 0.3515 moles/Kg
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Hence; the depression in freezing point is 0.6513 
The freezing point of solution will therefore be;
= 273 - 0.6513 = 272.3487 K

7 0
3 years ago
Find the number of moles of sodium hydroxide in 25cm3 solution of concentration 0,1 mol/dm3​
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2 years ago
Determine the energy change in the following reaction. This reaction is considered ...
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Answer:isothermic

Explanation:

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2 years ago
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