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2 years ago

Which of the following describes the greenhouse effect?

Chemistry

2 answers:

ankoles [38]2 years ago

6 0

Earth's greenhouse gases trap heat in the atmosphere and warm the planet.

Sergeeva-Olga [200]2 years ago

4 0

Answer:

The answer to this problem is D.

Explanation:

Firstly, light from the sun passes through Earth's atmosphere to reach Earth's surface and heat the planet. However, some of this light is radiated back into space in the form of infrared radiation. This radiation is trapped by Earth's greenhouse gases in the atmosphere, causing Earth's surface to heat up. For this reason, choice D makes the most sense.

You might be interested in

Periods On the periodic table represent elements

Natalka [10]

Answer:When you look at the periodic table, each row is called a period (Get it? Like PERIODic table.). All of the elements in a period have the same number of atomic orbitals. For example, every element in the top row (the first period) has one orbital for its electrons.

Explanation:

7 0

2 years ago

Air is compressed from an inlet condition of 100 kPa, 300 K to an exit pressure of 1000 kPa by an internally reversible compress

ElenaW [278]

Answer:

(a) $W_{isoentropic}=8.125\frac{kJ}{mol}$

(b) $W_{polytropic}=7.579\frac{kJ}{mol}$

Explanation:

Hello,

(a) In this case, since entropy remains unchanged, the constant $k$ should be computed for air as an ideal gas by:

$\frac{R}{Cp_{air}}=1-\frac{1}{k} \\\\\frac{8.314}{29.11} =1-\frac{1}{k}\\$

$0.2856=1-\frac{1}{k}\\\\k=1.4$

Next, we compute the final temperature:

$T_2=T_1(\frac{p_2}{p_1} )^{1-1/k}=300K(\frac{1000kPa}{100kPa} )^{1-1/1.4}=579.21K$

Thus, the work is computed by:

$W_{isoentropic}=\frac{kR(T_2-T_1)}{k-1} =\frac{1.4*8.314\frac{J}{mol*K}(579.21K-300K)}{1.4-1}\\\\W_{isoentropic}=8.125\frac{kJ}{mol}$

(b) In this case, since $n$ is given, we compute the final temperature as well:

$T_2=T_1(\frac{p_2}{p_1} )^{1-1/n}=300K(\frac{1000kPa}{100kPa} )^{1-1/1.3}=510.38K$

And the isentropic work:

$W_{polytropic}=\frac{nR(T_2-T_1)}{n-1} =\frac{1.3*8.314\frac{J}{mol*K}(510.38-300K)}{1.3-1}\\\\W_{polytropic}=7.579\frac{kJ}{mol}$

$W_{isothermal}=RTln(\frac{p_2}{p_1} )=8.314\frac{J}{mol*K}*300K*ln(\frac{1000kPa}{100kPa} ) \\\\W_{isothermal}=5.743\frac{kJ}{mol}$

Regards.

8 0

2 years ago

List the following elements in order from lowest boiling point to highest

-BARSIC- [3]

Answer:

Aluminum lodide - 680 degrees

fructose- 824 degrees

potassium bromide- 2,615 degrees

calcium bromide 3, 515 degrees

lowest boiling point is 680 and highest is 3,515.

hope this helps:)

7 0

2 years ago

If I remove the table from under the book, what will happen to the book? Think about Newton’s second law of motion. Is there an

tiny-mole [99]

Newton’s second law of motion is a dot product of mass and acceleration, if you remove the table from, under the book, gravity will act on the book and pull it downwards to the centre of the earth

Newton's Second law of motion states that "the acceleration of an object depends upon two variables – the net force acting on the object and the mass of the object."

In our case the mass of the book and the force of gravity

Learn more about Newton's Laws of motion:

brainly.com/question/10454047

3 0

2 years ago

When an acid or vase is added to to water,

velikii [3]

Answer:

yes

Explanation:

3 0

2 years ago