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Ainat [17]
2 years ago
9

A physical change is ...

Chemistry
1 answer:
AnnZ [28]2 years ago
5 0

Answer:

the answer is c I just took the test

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NO<br> Assign oxidation numbers to each element in this compound.
marta [7]

Answer:

N=+2

O=-2

Explanation:

The compound NO is electrically neutral.

Lets assign the oxidation number of nitrogen to be N. The oxidation number of oxygen (-2) is then used as a reference.

For the compound to have a zero charge,  sum of the oxidation numbers equals zero.

N+ (-2)=0

N=+2

O=-2

7 0
3 years ago
When an object transfers energy to another object, does it always transfer all of it’s energy?
valentinak56 [21]

Answer:

Conservation of energy means that the total change of energy in any system is always equal to the total energy transferred into or out of the system.

3 0
3 years ago
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Blank is the total disappearance of all members of a species.
Vlad [161]

Answer:

Extinction

Explanation:

When a species becomes extinct, every last specimen has died out

3 0
2 years ago
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What property can be used to determine if a sample is a pure substance or a mixture?
Yuliya22 [10]

Answer:

Melting point

Explanation:

Pure substances have sharp melting and boiling points while impurities lower the melting point and raise the boiling point

7 0
2 years ago
Which planet is terrestrial?<br> Jupiter<br> Mars<br> O Saturn<br> Uranus
Zolol [24]

Answer: Mars

Explanation: The planet of Mars is the only planet of all that is terrestrial. Jupiter, Saturn and Neptune are all Jovian Planets. The answer to the question is Mars. Hope this answer helps you!

4 0
2 years ago
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