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3 years ago

Which is a practical application of boiling-point elevation?

1 answer:

7 0

Boiling-point is the point of a pure liquid matter starts to evaporate and change into gaseous phase. It is where the set of conditions such as the pressure and temperature enough to do so. Boiling-point elevation, on the other hand, is the phenomenon of which the boiling point of a pure liquid matter is elevated because of the dissolved substances. A great example would be the boiling point of a distilled water (pure water) which is lesser than the boiling point of a sea water because of the dissolved salts. A pure water boils at 100°C at atmospheric pressure while a salt water boils at higher temperature than 100°C at the same pressure. Thus, the answer is D.

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Why can't all mixtures be classified as solutions?

shusha [124]

D. Not all mixtures are heterogeneous

7 0

2 years ago

Hydrogen and chlorine gases react to form HCl. You and a friend are on opposite sides of a long hallway, you with H2 and your fr

natali 33 [55]

Answer: It is true that Your friend should release the $Cl_{2}$ first.

Explanation:

The velocity of particles of a gas is inversely proportional to the mass of gas. This means that more is the mass of gas less will be its velocity.

Or, more will be the mass of gas more slowly it will move from one place to another.

The molar mass of chlorine gas is more than the molar mass of hydrogen gas. Therefore, chlorine gas will move slowly.

So, your friend should release the $Cl_{2}$ gas first and then according to the length of room you should release the $H_{2}$ gas.

Thus, we can conclude that it is true that Your friend should release the $Cl_{2}$ first.

4 0

3 years ago

The symbols from the list and match them with the names of the

stich3 [128]

Be - Beryllium
S - sulfur
K - Potassium
C - Carbon
B - Boron
Ar - Argon
O - oxygen
Ne - Neon
Ca - Calcium
H - Hydrogen

3 0

2 years ago

Changes in the composition of the atmosphere have caused gradual changes in earth's _______ throughout history, causing changes

bearhunter [10]

climate

Changes in the composition of the atmosphere have caused gradual changes in earth's <u>climate</u> throughout history, causing changes in plant and animal life that contributed to mass extinctions.

The following are some of the reasons:

UV light
climate
pollutants
hydrofluorocarbons

heat

The surface of the Earth warms up as sunlight strikes it.
Surface-emitted infrared light is absorbed in the atmosphere and transformed into heat.
The temperature close to the surface rises as a result of this heat being trapped in the atmosphere.

<h3>UV light:</h3>

indirect impacts of climate change on UV radiation from the surface.
By changing the concentrations of ozone, UV-absorbing tropospheric gases, aerosols, and clouds in the atmosphere, climate change may have indirectly affected UV radiation levels in the past.
These influences are probably going to persist in the future.

<h3>climate:</h3>

People are at risk from food and water shortages, greater flooding, high heat, an increase in disease, and economic loss due to climate change.
Conflict and human migration are potential outcomes.
Climate change is the top hazard to world health in the twenty-first century, according to the World Health Organization (WHO).

<h3>pollutants:</h3>

these are also resulting in the increase of temperature of the Earth and is also damaging ozone layer.

To learn more about the changes in earth visit:

brainly.com/question/13434833?

#SPJ4

6 0

11 months ago

A functional group of atoms, such as OH, is called a

Licemer1 [7]

<span>Hydroxy group..

... :):) ....</span>

7 0

3 years ago