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ra1l [238]
3 years ago
14

At a room temperature, which of the following will evaporate first, a drop of water or a drop of ethanol

Chemistry
2 answers:
Angelina_Jolie [31]3 years ago
5 0

Ethanol will evaporate first because it is more volatile or has a lower boiling point than water.

elena-14-01-66 [18.8K]3 years ago
3 0

Answer:

The water and the alcohol will start to evaporate once you start blowing on your hand. Compared with water, alcohol has a lower heat of evaporation. That means that for the same amount of liquid, more heat transfer occurs during the evaporation of water compared with the alcohol.

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there are 1540 megawatts of wind-generated electricity produced globally every year. This amount is equivalent to how many kilow
Reptile [31]

1.54 x 10⁶kW

Explanation:

The problem here is converting from megawatts into kilowatts.

  Given 1540megawatts.

The mega- and kilo- watts are prefixes that denotes multiples of units.

  1 megawatt = 10⁶watts

  1 kilowatt = 10³watts

Now given 1540megawatts power to Kilowatt power;

   We see that :

   1000kW = 1mW

 1540mW x \frac{1000kW}{1mW} = 1.54 x 10⁶kW

learn more:

energy units brainly.com/question/4791744

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4 0
3 years ago
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ziro4ka [17]

Answer:

Torrey's neighbour is incorrect because increase in kinetic energy is proportional to velocity.  If the velocity increases so will the object's kinetic energy.  Because the mass is constant, if the velocity increases, so does the kinetic energy.

6 0
3 years ago
Which sub-layer thins out into space, where there is no air
KengaRu [80]
<span>The "exosphere" is the most distant and tenuous "layer" of our atmosphere.</span>
3 0
3 years ago
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How can we regain the hardness of water by adding lime?​
Maru [420]

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Alex Ar [27]

Answer:

RbOH

Explanation:

For this question, we have to remember what is the definition of a base. A base is a compound that has the <u>ability to produce hydroxyl ions</u> OH^-, so:

AOH~->~A^+~+~OH^-

With this in mind we can write the <u>reaction for each substance:</u>

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The only compound that fits with the definition is RbOH, so this is our <u>base</u>.

I hope it helps!

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3 years ago
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