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vaieri [72.5K]
2 years ago
12

What occurs as energy is transferred through the radiative zone of the sun? check all that apply. gamma rays are produced. photo

ns are absorbed and reemitted. energy is transferred through the large-scale movement of material. photons are scattered in many directions. energy is released into the photosphere.
Chemistry
1 answer:
AlladinOne [14]2 years ago
7 0

Answers:

1) Photons are absorbed by hot gas atoms.

2) Energy is transferred through large-scale movement of material.

3) Energy is released into the photosphere.

The Sun interior is divided into three regions: the inner core, the radiative zone and the convection zone.

The inner core is the central region of the Sun and all solar energy is produced in the core by nuclear fusion.

Radiative zone is around the inner core and in this area energy is transported by radiation.

The convection zone is the outer-most layer of the interior and in this area energy is transported by convection.

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In a quasi-static isobaric expansion, 700 J of work are done by the gas. If the gas pressure is 0.40 atm, what is the fractional
nordsb [41]

Answer : The fractional increase in the volume of the gas is, 1.78

Explanation :

Formula used to calculate the work done by the gas in quasi-static isobaric expansion is:

w=p\times dV

Isobaric means, at constant pressure.

w=p\times (V_f-V_i)

where,

w = work done by the gas = 700 J = 6.909 L.atm    (1 L.atm = 101.32 J)

p = pressure of the gas = 0.40 atm

V_f = final volume = ?

V_i = initial volume = 22.0 L

Now put all the given values in the above formula, we get:

w=p\times (V_f-V_i)

6.909L.atm=0.40atm\times (V_f-22.0)L

V_f=39.3L

Now we have to calculate the fractional increase in the volume of the gas.

Fractional increase in the volume of the gas = \frac{V_f}{V_i}

Fractional increase in the volume of the gas = \frac{39.3L}{22.0L}

Fractional increase in the volume of the gas = 1.78

Thus, the fractional increase in the volume of the gas is, 1.78

5 0
4 years ago
ANSWER THIS TO BE MARKED BRAINILEST Water in a beaker measures 250 milliliters. A rock is completely submerged in the water. The
Dovator [93]

Answer:

125 cubic meters

Explanation:

Subtract 375-250=125 cubic meters

5 0
3 years ago
A sample of calcium oxide (CaO) has a mass of 2.80 g. The molar mass of CaO is 56.08 g/mol. How many moles of CaO does this samp
taurus [48]

Answer: 0.0499

Explanation:

Got it from quizlet and it was correct on my test.

3 0
3 years ago
Read 2 more answers
Electron configurations based on Aufbau order of filling agree mostly with those derived experimentally, yet there are quite exc
marissa [1.9K]

1) Aufbau principle is a scheme used to reproduce the electron configurations  of the ground states of atoms by successively filling subshells with electrons in a specific  order, filling subshells in the following order: 1s, 2s,  2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f.

First exceptions to the Aufbau principle is for example chromium atom (Cr).

Chromium has atomic number 24, it means it has 24 protons and 24 electrons.

The Aufbau principle predicts the configuration  [Ar] 3d⁴ 4s².

But the correct electron configuration of chromim atom is:

₂₄Cr 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ 4s¹ or   [Ar] 3d⁵ 4s¹.

In chromium, half full d-sub level (3d) is more stable than a partially filled d sub-level (3d⁴), that is why an electron from the 4s orbital goes to a 3d orbital.

2) Second example is gallium atom (Ga).

Gallium has atomic number 31, it has 31 protons and 31 electrons.

The Aufbau principle predicts the configuration:

₃₁Ga 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p¹.

The correct electron configuration for gallium atom is:

₃₁Ga 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p¹.

That is because 3d subshell has lower energy, when is filled with electrons, than 4s subshell.

Valence electrons are in 4s and 4p orbitals, because when gallium loses three electrons, it has electron configuration:

₃₁Ga³⁺ 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰.

5 0
3 years ago
After James Chadwick discovered the neutron, atomic theory expanded to include isotopes. Isotopes have many practical uses. For
andrew-mc [135]

Answer:

The answer is C which is 8 neutrons

Explanation:

This is because all carbon isotopes have 6 protons in their nucleus. Carbon 14 have 2 extra neutron aside from only having 6. So 6 protons + 6 neutrons + 2 more extra makes 14 which makes it Carbon - 14. I hope this makes sense.

8 0
3 years ago
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