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dedylja [7]
3 years ago
10

Describe how you would use the information depicted in the potential energy diagram below to determine the enthalphy change of t

he reaction and if the reaction is endothermic or exothermic?
Chemistry
1 answer:
Oliga [24]3 years ago
5 0

When the formation of a substance is negative, it means that it releases heat to the surroundings. When it releases heat to the surroundings, the reaction is exothermic. When it absorbs heat from the surroundings, the reaction is endothermic.

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zimovet [89]

Answer:

498 kj/mol

Explanation:

Chemical reactions occur as a result of bond breaking and bond formation.

The bonds in reactants are broken and atoms are rearranged to form new bonds.

During bond breaking energy is absorbed to break the bonds of reactants while bond formation involves the release of energy during the formation of new bonds.

In our case;

In 1 mole of the Oxygen molecule, there is one O=O bond

Energy absorbed to break O=O is 498 kJ/mol

Therefore, the ΔH required to break all the bonds in one mole of Oxygen(O₂) molecules is 498kJ/mol.

Note that, bond breaking is endothermic since energy is absorbed  from the surroundings.

mark brainliest pls

8 0
2 years ago
How many significant figures does 6559.060 have
UNO [17]
<span>significant figures: 7, decimals: 3</span>
5 0
3 years ago
Which part of the ocean has the lowest temperatures and highest salinity?
KatRina [158]

Answer:

The north atlantic contains the warmest and saltiest water of the major oceans, the southern ocean is the coldest, the north pacific has the lowest average salinity. This density signature is locked into the water parcel when it sinks

Explanation:

i think

8 0
3 years ago
An ice cube is placed on a kitchen counter. Which best describes heat flow in this situation
Sauron [17]
<span>When an ice cube is placed on a kitchen counter, heat will flow from the ice cube to the counter, causing the molecules in the counter to move more slowly. The molecules of the counter move more slowly because the heat transferred to them from the ice has reduced their kinetic energy.</span>
7 0
3 years ago
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A scientific law is ___.
Daniel [21]

Answer: a rule that describes a pattern in nature.

Explanation:

3 0
2 years ago
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