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Damm [24]
3 years ago
10

Tipo de reacciónMg + O₂>MgO + 1199.66 kJ​

Chemistry
1 answer:
koban [17]3 years ago
5 0

Answer:

An exothermic combination reaction

Explanation:

There are two aspects to consider regarding this reaction, as it doesn't only provide the reaction but it also includes the enthalpy change for the reaction.

In terms of this reaction, magnesium atom combines with oxygen molecule to produce one product, magnesium oxide. This may be classified as a combination reaction.

Now, we also see that we released a total of 1199.66 kJ of heat as our product. There are two types of reactions in terms of the enthalpy change: exothermic reactions (those that release heat) and endothermic reactions (those that consume heat).

The enthalpy change for exothermic reactions is negative and it's positive for endothermic reactions.

However, here we're actually given heat as a product. If we have it as a product, this means heat was released into the surrounding by this reaction and we have an exothermic reaction.

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What value of ℓℓ is not allowed for an electron in an n = 3 shell?
dlinn [17]
Every electron shell, designated by "n", has a specific number of electron subshells. The shell number has values equivalent to natural numbers (1, 2, 3, 4...), while the subshells are s, p, d and f.

The subshell that does not exist within the third shell (n = 3) is the f subshell. The energy of the f subshell is too high and cannot be accommodated in the third shell.
3 0
3 years ago
What elements react the most? Like have the most reactivity.
Vera_Pavlovna [14]

If you mean what group of elements react the most, the answer is the alkali metals and the halogens because they both only either need to gain or lose one electron. If you mean the most reactive element, it would be fluorine because it has the most electronegativity.

4 0
3 years ago
A compound with molecular formula C6H15N exhibits a singlet at d 0.9 ppm (1H), a triplet at 1.10 ppm (3H), a singlet at 1.15 ppm
Triss [41]

Answer:

CH3 - CH2 - NH - C(CH3)3

Explanation:

The 1HNMR is the acronym for Proton nuclear magnetic resonance and it is used in chemistry or Chemical laboratory for the analysis and identification of compounds.

In order to be able to answer the question accurately you have to have the tables containing all the values for chemical shift. The Chemical shift is measured in ppm and it occur due to Resonance frequency variation.

From the table, a singlet at 1.15 ppm (9H) is - C(CH3)3.

A singlet at d 0.9 ppm (1H) shows the presence of a secondary amine group, that is -R2NH group.

A triplet at 1.10 ppm (3H) shows that we have;

CH3- CH2-

A quartet at 2.6 ppm (2H) shows that we have;

-CH2 - CH3.

Therefore, joining all together we have;

CH3 - CH2 - NH - C(CH3)3.

Kindly check attached file for the picture of the structure.

5 0
3 years ago
The part of the ocean floor that separates the oceanic rise from the thick continental crust and is between the shoreline and th
BabaBlast [244]
It’s called the Margin. So D) Margin
4 0
3 years ago
an amber alert object is placed in 50 mL of water in the water level rises 72 ml. What is the volume of the object?​
Ilya [14]

Answer:

72 ml-50 ml =22 ml is the volume of the object

Explanation:

7 0
3 years ago
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