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TiliK225 [7]
3 years ago
6

The data table below shows four different chemical reactions, the temperature change of each, and the duration of the change in

temperature. Based on this data, which reaction would be classified as an exothermic reaction? Explain your answer. ALL TEMPS ARE IN CELSIUS
Reaction 1: temp change: -25 degrees; duration of temp change: 25 mins
Reaction 2: temp change: -23 degrees; duration of temp change: 15 mins
Reaction 3: temp change: -30 degrees; duration of temp change: 25 mins
Reaction 4: temp change +22 degrees; duration of temp change: 30 mins
Chemistry
2 answers:
mestny [16]3 years ago
3 0

Answer:

Reaction 4

Explanation:

exothermic reaction is reaction in which reaction takes place evolving heat

Nataly_w [17]3 years ago
3 0

Answer:

NO

Explanation:

the reson is because nobody wanna answer my questions

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Arrange the compounds by their reactivity toward electrophilic aromatic substitution.
swat32

Answer:

The order of reactivity towards electrophilic susbtitution is shown below:

a. anisole > ethylbenzene>benzene>chlorobenzene>nitrobenzene

b. p-cresol>p-xylene>toluene>benzene

c.Phenol>propylbenzene>benzene>benzoic acid

d.p-chloromethylbenzene>p-methylnitrobenzene> 2-chloro-1-methyl-4-nitrobenzene> 1-methyl-2,4-dinitrobenzene

Explanation:

Electron donating groups favor the electrophilic substitution reactions at ortho and para positions of the benzene ring.

For example: -OH, -OCH3, -NH2, Alkyl groups favor electrophilic aromatic substitution in benzene.

The -I (negative inductive effect) groups, electron-withdrawing groups deactivate the benzene ring towards electrophilic aromatic substitution.

Examples: -NO2, -SO3H, halide groups, Carboxylic acid groups, carbonyl gropus.

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3 years ago
What is the molarity of a solution with 130g of CoCl2 in 1/2 liter? (can you show the steps please)
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3. Substitute in molarity equation

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Hope this helps!
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