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3 years ago

When does the electron shown release the greatest amount of energy as it moves from one level to another?

Chemistry

1 answer:

ELEN [110]3 years ago

8 0

S1 to GS as the amount of energy required to remove the electron is greatest when it is closest to the nucleus. think about two magents. does it take more energy to spereate them when they are far apart or when they are very close together? it's the same idea with electrons. the more energy required to remove, the more energy will be emmitted.

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50 extra if correct !!

leva [86]

Answer:

Explanation:

the gradual movement of the continents across the earth's surface through geological time.

7 0

3 years ago

Phenolphthalein has a pKa of 9.7 and is colorless in its acid form and pink in its basic form. calculate [In-}/{HIn} for the fol

zvonat [6]

Answer:

1.58x10⁻⁵

2.51x10⁻⁸

0.0126

63.10

Explanation:

Phenolphthalein acts like a weak acid, so in aqueous solution, it has an acid form HIn, and the conjugate base In-, and the pH of it can be calculated by the Handerson-Halsebach equation:

pH = pKa + log[In-]/[HIn]

pKa = -logKa, and Ka is the equilibrium constant of the dissociation of the acid. [X] is the concentrantion of X. Thus,

i) pH = 4.9

4.9 = 9.7 + log[In-]/[HIn]

log[In-]/[HIn] = - 4.8

[In-]/[HIn] = $10^{-4.8}$

[In-]/[HIn] = 1.58x10⁻⁵

ii) pH = 2.1

2.1 = 9.7 + log[In-]/[HIn]

log[In-]/[HIn] = -7.6

[In-]/[HIn] = $10^{-7.6}$

[In-]/[HIn] = 2.51x10⁻⁸

iii) pH = 7.8

7.8 = 9.7 + log[In-]/[HIn]

log[In-]/[HIn] = -1.9

[In-]/[HIn] = $10^{-1.9}$

[In-]/[HIn] = 0.0126

iv) pH = 11.5

11.5 = 9.7 + log[In-]/[HIn]

log[In-]/[HIn] = 1.8

[In-]/[HIn] = $10^{1.8}$

[In-]/[HIn] = 63.10

6 0

3 years ago

Which of these metals is the MOST reactive? Lithium Copper Gold Calcium

lutik1710 [3]

Answer:

The correct answer to you your question is Potassium

Explanation:

Potassium is the most reactive

7 0

2 years ago

Convert the following temperatures from K to °C.

jekas [21]

-173.15

-0.15

-267.15

416.15

846.15

assuming k is kelvins and c is celsius

4 0

3 years ago

Read 2 more answers

Which state of matter undergoes changes in volume most easily

lina2011 [118]

Gases and plasma's undergo changes in volume most easily. In contrast, liquids and solids have fixed volumes, although liquids do not have fixed shapes. Gases and plasma's expand or contract to fill their containers.

8 0

3 years ago