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ivann1987 [24]
2 years ago
11

What is the temperature of a sample of propanone when the vapor

Chemistry
2 answers:
Orlov [11]2 years ago
5 0
Your answer on this question is B
Serga [27]2 years ago
5 0
The answer would be •B)75•
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A stain is made up of molecules that do not have charged regions. What soap/solvent combination should I use?Are there multiple?
Dmitry_Shevchenko [17]

Answer:

The answer is below

Explanation:

Yes, there are multiple combinations.

Firstly, a solvent or soap combination could be used as a polar solvent with soap. In this way, the nonpolar region of the soap molecules would mix directly with the stain while the solvent would surround the soap-stain micelle.

Secondly, another method or way is to have a combination of a nonpolar solvent with no soap. In this method, however, it is the solvent that would mix directly with the stain.

4 0
2 years ago
Explain how this change will impact the transfer of thermal energy in the solar cooker design and describe one possible design i
katen-ka-za [31]

Answer:it conduct thermal conductivity because of the heat it holds

Explanation:

3 0
2 years ago
Number 3 ...................​
Crank
It’s B



Silicon is used for electronic devices because it is an element with very special properties. One of it's most important properties is that it is a semiconductor.




4 0
3 years ago
Elias observed a sample in the classroom. The sample was a liquid at room temperature. He performed a conductivity test and foun
marusya05 [52]

Answer:

C) nonmetal

Explanation:

Given;

The sample is in liquid state and do not conduct electricity.

We have given four types of classification.So for first,

A) Ionic

Ionic compounds are found in solid state at room temperature and it conducts electricity when dissolved in water. Hence the sample could not be ionic.

B)Metal

Metals are found in solid state at room temperature  except mercury and it conducts electricity very well. Mercury also conducts electricity.So the sample is not a metal.

C)Nonmetal

Non metals are found in solid state  except bromine which is in liquid state  at room temperature and it does not conducts electricity.

Here the property of nonmetal matches with the sample, so the sample is a nonmetal and it could be Bromine.

D)Salt

Salt is an ionic compound  found in solid state at room temperature and it conducts electricity when dissolved in water. Hence the sample could not be salt.

5 0
3 years ago
What is the number of moles of a solute that is dissolved in 1 liter of solution?
vichka [17]

Answer:

The answer is molarity.

Explanation:

I just took the test but you have to remember that the concentration of solutes in a solution is expressed as M which equals moles of solute/liters of solution. This is the definition of molarity.

I hope I helped! :D

5 0
3 years ago
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