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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 of the following intermolecular forces is the strongest?
Tanzania [10]

Answer:

A. Hydrogen Bonding

Explanation:

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3 years ago
Which is heavier einsteinium (Es) or europium (Eu)
SVETLANKA909090 [29]

I think the answer is einsteinium is the heavier one here.

8 0
3 years ago
What are the properties of all alkaline materials
Fantom [35]
Ammonia, ammonium hydroxide, calcium hydroxide and oxide. I think...
7 0
3 years ago
Here is the information: A 1.2516 gram sample of a mixture of CaCO3 and Na2SO4 was analyzed by dissolving the sample and adding
tiny-mole [99]

Answer:

93,32 % (w/w)

Explanation:

The Ca²⁺ of CaCO₃ was completely precipitate to CaC₂O₄ that results in H₂C₂O₄. The titration of this one is:

3H₂C₂O₄ + 2H⁺ + MnO₄⁻ → Mn²⁺ + 4H₂O + 6CO₂

As you required 35,62mL of 0,1092M MnO₄⁻, the moles of H₂C₂O₄ are:

0,03562L×\frac{0,1092M}{L} =

3,890x10⁻³mol of MnO₄⁻×\frac{3molH_{2}C_{2}O_{4}}{1mol MnO_{4}^-} = <em>0,01167 mol of H₂C₂O₄</em>

The number of moles of CaCO₃ are the same number of moles of H₂C₂O₄ because every Ca²⁺ was converted in CaC₂O₄ that was converted in H₂C₂O₄. That means: <em>0,01167 mol of CaCO₃</em>

0,01167 mol of CaCO₃ are:

0,01167 mol of CaCO₃×\frac{100,0869g}{1mol} = <em>1,168 g of CaCO₃</em>

As the mass of the initial mixture is 1,2516 g, the percentage by weight of CaCO₃ is:

\frac{1,168g}{1,2516g}×100 = <em>93,32 % (w/w)</em>

I hope it helps!

7 0
3 years ago
Minerals can form from the crystallization of
lesya692 [45]
Crystallization is the process of atoms forming a material with a crystal structure
6 0
3 years ago
Read 2 more answers
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