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faltersainse [42]
3 years ago
7

Identify which of the following statements are true. Check all that apply. Check all that apply. Ionization energies are always

negative quantities. Oxygen has a larger first ionization energy than fluorine. The second ionization energy of an atom is always greater than its first ionization energy. The third ionization energy is the energy needed to ionize three electrons from a neutral atom.
Chemistry
1 answer:
AURORKA [14]3 years ago
4 0

Answer:

The second ionization energy of an atom is always greater than its first ionization energy.

Explanation:

<em>Ionization energies are always negative quantities.</em> FALSE. Ionization energies are always positive because they represent the energy that has to be added to a neutral gaseous atom to remove 1 electron. By convention, energy absorbed goes with the positive sign.

X(g) + 1 I.E. ⇒ X(g)⁺ + 1 e⁻

<em>Oxygen has a larger first ionization energy than fluorine.</em> FALSE. First ionization energy  (1 I.E) is the energy required to remove 1 electron from a neutral gaseous atom. First ionization energy for Oxygen is 13.61 eV and for Fluorine is 17.42 eV, that is, more energy is required to remove an electron from F than from O.

<em>The second ionization energy of an atom is always greater than its first ionization energy.</em> TRUE. The energy required to remove 1 electron from a +1 cation (second ionization energy) is always greater than the first ionization energy because of the attraction between the cation and the electron.

X(g)⁺ + 2 I.E. ⇒ X(g)⁺² +  1 e⁻

<em>The third ionization energy is the energy needed to ionize three electrons from a neutral atom.</em> FALSE. The third ionization energy (3 I.E.) is the energy required to remove 1 electron from a +2 cation.

X(g)⁺² + 3 I.E. ⇒ X(g)⁺³ +  1 e⁻

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32.7 g of Zn

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From the balanced equation above,

1 mole of Zn reacted to produce 1 mole of H₂.

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Thus, 0.5 mole of Zn is required.

Finally, we shall determine the mass of 0.5 mole of Zn. This can be obtained as follow:

Mole of Zn = 0.5 mole

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9 grams of hydrogen gas (H2) will SC  Johnson need to react in order to make 1 bottle of Windex.

Explanation:

Balance equation for the formation of ammonia from H2 gas.

N2 + 3H2 ⇒ 2 NH_{3}

Given

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atomic mass of ammonia 17.01 gram/mole

number of moles = \frac{mass}{atomic mass of 1 mole}

number of moles = \frac{51}{17.01}

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in 1 bottle of windex there are 3 moles of ammonia 0r 51 grams of ammonia.

From the equation it can be found that:

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