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3 years ago

What average global temperature is maintained when there is a balance in Earth’s energy budget?

2 answers:

8 0

The incoming and outgoing energy at the Earth’s surface must balance. Or in other words, the flow of energy into the atmosphere must be balanced by an equal flow of energy out of the atmosphere and back to space.
Earth's Energy balance describes how the incoming energy from the sun is used and returned to space. All of the energy entering earth’s atmosphere comes from the sun. Half of it is absorbed by the earth’s surface i.e. the land and oceans, 30% is directly reflected back to space by clouds and 20% is absorbed by the atmosphere and clouds.Earth's actual average global temperature is around 14° C (57 F).

Paha777 [63]3 years ago

6 0

Answer:

15°C

Explanation: so you don't have to read all of that :)

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Which of the following apply to gases. Select all that apply.

melamori03 [73]

Explanation:

In gases the molecules are held together by weak Vander waal forces. Due to this they have more kinetic energy and they tend to diffuse at a faster rate because of more number of collisions between the molecules.

That is why, its molecules readily spread into the atmosphere as compared to the molecules of solids and liquids. Also, when molecules of a gas collide with the walls of a container then they tend to come back at their initial position for a fraction of second or more.

Hence, gas collisions are elastic in nature.

According to Graham's law, rate of diffusion of a gas is inversely proportional to the square root of molar mass of the gas. Hence, more is the molecular weight of gas less likely it is able to diffuse into the surroundings.

$\text{Rate of diffusion} \propto \sqrt{\frac{1}{M}}$

Thus, we can conclude that following apply to gases.

Gas collisions are elastic.

Gases mix faster than solids or liquids.

Gases with larger molecular weights diffuse slower than gases with lower molecular weights.

4 0

3 years ago

The ionic charge of an element in Group 6A is 2–. -True -False

natita [175]

True. These ions are of a 2- charge. Oxygen is an example. It will form a 2- charge if ionize.

4 0

3 years ago

Which is the isoelectronic of Na

postnew [5]

Mg- is the isoelectronic of Na

6 0

3 years ago

Write a procedure that you would follow to demonstrate the effect of increasingly higher concentrations of hydrochloric acid on

Hitman42 [59]

The reaction would produce bubbles of gas.

We can prepare 3-5 test tubes of acid with increasing concentrations. Then, we add antacid tablets to each and note the time taken for the tablet to dissolve and stop producing bubbles. The lesser the time taken, the greater the rate of reaction.

7 0

3 years ago

0.0145 moles of helium gas are introduced into a balloon so that the volume of the balloon is 2.54 liters. An additional amount

olga_2 [115]

Answer:

4.43L is final volume of the ballon

Explanation:

Avogadro's law of ideal gases states that equal volumes of gases, at the same temperature and pressure, have the same number of molecules.

The formula is:

$\frac{V_1}{n_1} =\frac{V_2}{n_2}$

Where V and n are volume and moles of the gas in initial and final conditions.

If the initial conditions are 0.0145 moles and 2.54L and final amount of moles is 0.0253moles, final volume is:

$\frac{2.54L}{0.0145mol} =\frac{V_2}{0.0253mol}$

V₂ = 4.43L is final volume of the ballon

6 0

3 years ago