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Dmitriy789 [7]
3 years ago
13

Does spring and Fall exist at the poles?

Chemistry
2 answers:
Anuta_ua [19.1K]3 years ago
8 0

Answer:

Yes!

Explanation:

The Earth takes 365.24 days to orbit the sun, as we move around the Sun during the year, the amount of light each area of the planet receives varies in length. When the Earth’s axis points towards the Sun it is summer and when the Earth’s axis points away from the sun it is summer. So while the sun is rotating in between the times of the 6mths to get from one season to the other we have spring and autumn. The earth’s movement around the sun causes the seasons, but it does not affect the temperatures during the seasons. Fun fact many people believe that the temperature changes based on the sun, however during the summer months the earth is further away from the sun in July and closest to the sun in January in the winter months.

seropon [69]3 years ago
4 0

Answer:

Yes

Explanation:

The tilt of the Earth means the Earth will lean towards the Sun (Summer) or lean away from the Sun (Winter) 6 months later. In between these, Spring and Autumn will occur. The North pole always points the same way as the Earth revolves around the Sun.

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How many moles of sulfuric acid (H2SO4) are needed to react completely with 6.8 moles of lithium hydroxide (LiOH)? (4 points) 2L
Keith_Richards [23]

Answer:

3.4 mol H2SO4

Explanation:

Took the test

3 0
3 years ago
Determine the volume occupied by 2.5 mol of a gas at 18 °C if the pressure is 81.8 kPa?
mars1129 [50]

Answer:

74 litre

Explanation:

using ideal gas eqation PV=nRT

here P(pressure)=81.8 kPa =81.8×10^3 Pa

moles=2.5

temperature=273.15+18=291.15K

Gas constant R=8.314m^3-Pa/K-mol

now, V=nRT/P = 8.314×2.5×291.5/81.8×10^3 ≈74litre

✌️;)

3 0
3 years ago
25. To separate benzene from water, a 850 g aqueous solution of benzene is cooled from
Sonja [21]

Answer:

132.94 kilo joules

Explanation:

We are given;

  • Mass of benzene solution is 850 g
  • Temperature change from 95°C to 3° C = 92° C or 92 K

We are required to determine the energy released by the cooling of benzene.

Taking the specific heat capacity of liquid benzene as 1.7 kJ/kg/K

Then we can determine the amount of heat energy released by using the formula;

Heat = Mass × specific heat × change in temperature

        = 0.85 kg × 1.7 kJ/kg/K × 92 K

        = 132.94 kilo joules

Therefore, the heat released by cooling benzene is 132.94 kilo joules

6 0
3 years ago
At 45 ∘C, Kc = 0.619 for the reaction N2O4(g)⇌2NO2(g). If 48.2 g of N2O4 is introduced into an empty 2.08 L container, what are
vodka [1.7K]

Answer:

P N₂O₄ = 3,05 atm

P NO₂ = 7,04 atm

Explanation:

48,2g of N₂O₄ are:

48,2g ₓ (1mol / 92,011g) = 0,524mol of N₂O₄ / 2,08L = 0,252M

Based on the reaction

N₂O₄(g) ⇌ 2NO₂(g) Kc = 0,619 = [NO₂]² / [N₂O₄] <em>(1)</em>

Concentrations in equilibrium are:

[N₂O₄] = 0,252M - X

[NO₂] = 2X

Replacing in (1):

0,619 = [2X]² / [0,252-X]

0,156 - 0,619X - 4X² = 0

Solving for X:

X = -0,289 → <em>False answer, there is no negative concentrations</em>

X = 0,135

Replacing:

[N₂O₄] = 0,252M - 0,135

[N₂O₄] = <em>0,117M</em>

[NO₂] = 2X

[NO₂] = 2×0,135 = 0,270M

using:

P = M×R×T

Where P is pressure, M is molarity, R is gas constant (0,082atmL/molK) and T is temperature (45 + 273,15 = 318,15K). Pressure of N₂O₄ and NO₂ are:

P N₂O₄ = 0,117M×0,082atmL/molK×318,15K = <em>3,05atm</em>

P NO₂ = 0,270M×0,082atmL/molK×318,15K = <em>7,04atm</em>

<em></em>

I hope it helps!

5 0
3 years ago
Read 2 more answers
3H2 + N2 → 2NH3<br> What’s the answer
m_a_m_a [10]

Answer:

well its a equilibrium constant and the type of reaction is a synthesis.

The full equation is  4NH

Explanation:

For what your trying to get out of this answer I am not too sure on what your trying to say here except for what I told you.

Hope this helps..

3 0
3 years ago
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