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3 years ago

14

Which of the following best describes what causes the phases of the moon? The alignment of the sun, Earth, and moon The speed of

the moon around the Earth The speed of the Earth around the sun The alignment of the planets

1 answer:

BlackZzzverrR [31]3 years ago

6 0

The alignments of the planets would be the correct answer.<span />

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Thermal energy is transferred from?

aliina [53]

Answer:

chemical and electrical ( and sometimes nucelar)

Explanation:

4 0

3 years ago

Read 2 more answers

KMnO4<br><br> Assign oxidation numbers to each element in this compound.

zysi [14]

K=+1

Mn= +7

O= -2

That’s it!!!

8 0

3 years ago

Two equilibrium reactions of nitrogen with oxygen, with their corresponding equilibrium constants (Kc) at a certain temperature,

7nadin3 [17]

Answer:

Kc = 1.54e - 31 / 2.61e - 24

Explanation:

1 ) $N_{2}(gas) + O_{2}(gas)\rightarrow 2NO(gas)$ ; Kc = 1.54e - 31

2) $N_{2}(gas) + 1/2O_{2}(gas)\rightarrow N_{2}O(gas)$ ; Kc = 2.16e - 24

upon reversing ( 2 ) equation

$N_{2}O(gas)\rightarrow N_{2}(gas) + 1/2O_{2}(gas)$ Kc = 1/2.16e - 24

now adding 1 and reversed equation (2)

$N_{2}(gas) + O_{2}(gas)\rightarrow 2NO(gas)$

$N_{2}O(gas)\rightarrow N_{2}(gas) + 1/2O_{2}(gas)$

we get ,

$N_{2}O(gas) + 1/2O_{2}(gas)\rightarrow 2NO(gas)$ Kc = 1.54e-31 × 1/2.61e - 24

equilibrium constant of equation (3) is -

Kc = 1.54e - 31 / 2.61e - 24

3 0

2 years ago

Escriba la formula de:

nevsk [136]

Answer:

<h2>Translate your language to English </h2>

4 0

1 year ago

Which of the following would be expected to have the lowest first ionization energy?

scoundrel [369]

Explanation:

o2- Due to lowest Zeff.

I had that question and my answer was this. because you did not put options.

4 0

2 years ago