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FromTheMoon [43]

3 years ago

6

Which changes involve forming or breaking chemical bonds?

1 answer:

daser333 [38]3 years ago

7 0

Answer: burning and digesting

Both of these are chemical changes.

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Calculate the energy of an electron in the n = 5 level of a hydrogen atom.

djverab [1.8K]

Explanation:

the answer is in the above image

5 0

3 years ago

Balance the following equation. <br> C + H2 + 02 → C2H60

irina1246 [14]

4C + 6H2 + O2 -> 2C2H6O

8 0

3 years ago

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Which of the following is not a way an atom can achieve stability?

Dmitrij [34]

Answer:
<span>D. Remove electrons from its full outer energy level
</span>
Explanation:
The atom achieves its stable state when its outermost shell is completely full with 8 electrons (based on the octet rule)
Any atom whose outer shell is not completely full tends to lose gain or share electrons in order to complete this shell and become stable
Therefore, it is pointless for an atom with an outer shell having 8 electrons to lose electrons, because by this it convert from being stable to being unstable.

Hope this helps :)

6 0

3 years ago

A sample of gas occupies a volume of 67.5 mL . As it expands, it does 131.0 J of work on its surroundings at a constant pressure

baherus [9]

Answer:

The final volume $V2=1.3175L$

Explanation:

between work ( w), pressure ( P ) and volume ( V ) is the following:

w=−PΔV

where,

ΔV=V2−V1

It was stated that the gas is expanding, then the work is done by the system and it is of a negative value .

Note that work, should be expressed in 1L⋅atm=101.3J

CHECK THE ATTACHMENT FOR DETAILED EXPLATION

4 0

4 years ago

What type of erosion cause a canyon form?<br> water<br> wind<br> ice

timofeeve [1]

Answer:Water

Explanation: none

3 0

3 years ago

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