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FromTheMoon [43]
2 years ago
14

Based on the enthalpy changes given for the reactions, which reactions are endothermic?

Chemistry
1 answer:
slamgirl [31]2 years ago
4 0

Explanation:

yan po sana makatulong

pa brainliest na din po thanks

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The energy that is released in the hydrogen fusion reaction comes from __________.
timurjin [86]
The energy that is released in the hydrogen fusion reaction comes from the difference in mass between the 4 hydrogen H nuclei and single helium He nucleus

The answer is: The difference in mass between the four hydrogen nuclei and single helium nucleus
8 0
1 year ago
A garbage collector collects food wrappers and aluminum cans from a park. what type of waste is the garbage collector collecting
BartSMP [9]

Answer:

Explanation:

Food wrappers and aluminium wrappers are widely use for packing various eatable items.

For example, in our homes our mother wraps our food for lunch in aluminium foil.

As it helps in keeping the food warm for hours.

Thus, we can conclude that out of the given options, a packaging waste is the garbage collector collecting.

4 0
1 year ago
Acid rain is produced when _______ mixes with the water of a raindrop.
goldfiish [28.3K]

The answer should be  B - Nitrogen Dioxide.

5 0
3 years ago
If copper carbonate system is heated for too short a time, what will you notice for mass percent of copper be too large or too s
sammy [17]

Answer:

The mass percent of copper as element is the same.

Explanation:

First of all we need the reaction that is presented below:

CuCO_{3 (s)} +Heat → CuO_{(s)} + CO_{2 (g)}

The mass percent of copper (Cu) as element is the same because of during the reaction the element only transform its nature from copper carbonate (CuCO_{3 (s)}) to copper oxide (CuO_{(s)}), the latter is a solid and will remain in the system.

On the other hand, you will note that the global percentage mass will be small because of the reaction produce (CO_{2 (g)}) that is a gas and this one will escape for the system.  

Have a great day!

3 0
3 years ago
How can you tell from the name the types of bonds present in a hydrocarbon?
Aneli [31]

Answer:

Of bond is formed by sharing of electrons - covalent

If bond is formed by donation and by accepting electrons - ionic bond

Bond formed between metals - metallic bond.

7 0
2 years ago
Read 2 more answers
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