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nordsb [41]
3 years ago
7

Why does your skin feel drier in winter????​

Chemistry
2 answers:
gtnhenbr [62]3 years ago
8 0

Answer:

There are numerous reasons for having seasonal dry skin. The number one reason though is, Cold air holds less water. When water evaporates, it is drawn into the air, which "holds" it. 

Air can "hold" varying amounts of water. The warmer and drier the air, the more water it can hold. If the air has as much water it can hold, it is "saturated." If saturated air becomes cooler, the air loses some of its water-holding capacity and it has to lose some water, either as fog or rain or frost or possibly snow.

In the winter, the air can’t hold much water, so the air stays pretty dry. That is okay when you are outside, because even though the air is dry, it can’t draw much water from your skin, since its capacity is low anyway. (But if it is windy, you can still get pretty dry.)

The big problem is when you go inside, where the cold dry air is warmed up by the building’s heating system. Then the warm dry air has a huge capacity for water, and it sucks the water out of your skin like a leech.

Hope it helps dear.Please let me know

Anuta_ua [19.1K]3 years ago
5 0

Answer:

“It's that loss of moisture from upper layers of the skin that causes it to dry out.” Winter air is often dry, and the air that comes out of indoor furnaces can be even worse. However, dry skin can make its mark at other times of the year, too.

Explanation:

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How much heat is lost when 0.440 mol of steam condenses at 100 °C?
dusya [7]

Answer:

17,890 J

Explanation:

The amount of heat released by a gaseous substance when it condenses is given by the formula

Q=n\lambda_v

where

n is the number of moles of the substance

\lambda_v is the latent heat of vaporization

The formula can be applied if the substance is at its vaporization temperature.

In this problem, we have:

n = 0.440 mol is the number of moles of steam

\lambda_v=40,660 J/mol is the latent heat of vaporization of water

And the steam is already at 100C, so we can apply the formula:

Q=(0.440)(40660)=17,890 J

8 0
3 years ago
What is the mass of an object that has a density of 0.500 g/cm3 and a volume of 5.00 mL?
attashe74 [19]

Answer:

<h2>The answer is 2.5 g</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

density = 0.5 g/cm³

1 mL = 1 cm³

5 mL = 5 cm³

volume = 5 cm³

The mass is

mass = 0.5 × 5

We have the final answer as

<h3>2.5 g</h3>

Hope this helps you

4 0
3 years ago
5-8 complete sentences paragraph, explaining why you would want to make a change to help our ecosystems. (including a change you
alisha [4.7K]

Answer:

Explanation:Although the term is quite new, our connection to nature is not. We depend on nature for our survival - without healthy ecosystems, our drinking water isn’t clean nor is the air we breathe. We also enjoy nature... studies show that people who spend time in nature tend to be happier than those that don’t. It can even act as a natural anti-depressant. With industry and urban sprawl expanding at unprecedented rates, Ecosystem Services attempt to translate the benefits we receive from nature into economic terms so we can better understand the trade-offs we are making between nature and industrial development.

7 0
3 years ago
Read 2 more answers
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8_murik_8 [283]

Answer:

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6 0
3 years ago
1. 17.0 grams of xenon hexafluoride is in a solid container. How many milliliters of that gas
BlackZzzverrR [31]

Answer: The volume of gas is 3020 ml

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = 821.4 torr =  1.08 atm     (760 torr = 1atm)

V = Volume of gas in L = ?

n = number of moles = \frac{\text {given mass}}{\text {Molar mass}}=\frac{17.0g}{245.28g/mol}=0.069mol

R = gas constant =0.0821Latm/Kmol

T =temperature =302.7^0C=(302.7+273)K=575.7K

V=\frac{nRT}{P}

V=\frac{0.069mol\times 0.0821Latm/K mol\times 575.7K}{1.08atm}=3.02L=3020ml

Thus volume of gas is 3020 ml

4 0
3 years ago
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