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Leni [432]
2 years ago
9

Which of the following is an inexhaustible energy resource?

Chemistry
1 answer:
koban [17]2 years ago
4 0
<u />C. Water is an inexhaustible energy resource among these options. Coal, oil, and natural gas we can run of, but for the foreseeable future, there will always be water.
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How would you classify the following events?
ICE Princess25 [194]

Answer:  Event 1 is an example of a physical change and Event 2 is an example of a chemical change.

Explanation: Physical change is one in which there is no change in chemical composition of the substance. There is only a change in phase change.

Chemical change is a change in which there is a change in chemical composition and there might or might not be a phase change.

On Boiling, the water molecules remain bonded in the same form and only covert from liquid to gaseous form, thus is a physical change.

On Rusting of iron nail, the iron changes to iron oxide by combining with oxygen, there is a rearrangement of atoms and thus is a chemical change.

Fe+O_2+H_2O\rightarrow Fe_2O_3.xH_2O

8 0
3 years ago
A block of chocolate is melting on a hot pan. What type of heat transfer is this? Describe the way heat is transferred between t
klio [65]

Answer:liquid= _________   than the next ________ is heat

Explanation:

8 0
2 years ago
There is a gas at 780 mm of Hg, in a volume of 5 liters and a temperature of 37 ​ C, the volume is changed to 5.5 liters and the
HACTEHA [7]

Answer:

32.8 C

Explanation:

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- Hope that helped! Please let me know if you need further explanation.

6 0
3 years ago
How do you sort bonds by polarity
zzz [600]
Your question isn't quite clear, but if you're wondering if a chemical is polar or non-polar, you simply draw a VSEPR sketch and draw arrows where the bonds are. Only draw arrows between atoms, NOT between an atom and a lone pair of electrons. The arrow should point to the most electronegative atom (you should be given an electronegativity scale). Afterwards, you add up the arrows as vectors, and look at the sum of the vectors. If the sum is zero (CH4 is a good example), the chemical is non-polar. If the sum is a vector, the chemical is polar (H2O, or water, is polar).
7 0
3 years ago
What is the most common isotope for element X
ankoles [38]

Answer:

isotope 2

Explanation:

it has the highest percentage abundance

5 0
2 years ago
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