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Amanda [17]
3 years ago
8

Which of the following describes an endothermic reaction?

Chemistry
2 answers:
Karolina [17]3 years ago
4 0
During endothermic reaction, thermal energy is absorb by the system from the surrounding. The correct option is C.
Svet_ta [14]3 years ago
4 0

Answer: Option (c) is the correct answer.

Explanation:

When energy is absorbed by a system or reactants then the reaction is known as endothermic in nature. In this type of reaction, energy of reactants is less than the energy of energy of products.

Whereas when energy is released by a system or reactant then then the reaction is known as exothermic in nature. In this type of reaction, energy of reactants is more than the energy of products.

Thus, we can conclude that the statement thermal energy is absorbed by the system, best describes an endothermic reaction.

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These are formed when, after formation of the first atom, the pi-orbitals of Sulfur and Oxygen align and share another pair of electrons. This occurs between sulfur and both of the oxygen atoms, with each oxygen atom forming one pi-bond.
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A molecule contains 24.36 g of nitrogen and 62.64g of sliver
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Answer:

This molecule is AgN3

Explanation:

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2 years ago
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Which of the following alkyl halides will react fastest with CH3OH in an SN1 mechanism?
yaroslaw [1]

Answer:

IV

Explanation:

The complete question is shown in the image attached.

Let us call to mind the fact  that the SN1 mechanism involves the formation of carbocation in the rate determining step. The order of stability of cabocations is; tertiary > secondary > primary > methyl.

Hence, a tertiary alkyl halide is more likely to undergo nucleophilic substitution reaction by SN1 mechanism since it forms a more stable cabocation in the rate determining step.

Structure IV is a tertiary alkyl halide, hence it is more likely to undergo nucleophilic  substitution reaction by SN1 mechanism.

5 0
3 years ago
If measuring experimental results, what can you predict about the work output of a 1200 watt hair dryer? the work output of the
eimsori [14]

Answer: first option, the work output of the hairdryer will be less than the work input.


Explanation:


1) The work output measured in watts is the power of hair dryer measured in joules per second.


2) The hair dryer converts electrical energy from the wall outlet to mechanical and thermal energy: hot wind.


3) Nevertheless, you can never expect a 100% efficiency of the machines: due to friction, some energy is converted into useless energy.


So, efiiviency = power output / power input< 1 ⇒


power output = work output / time


input power = work input / time


⇒ work output / work input < 1


⇒ work output < work input.


Which is the first option: the work output of the hairdryer will be less than the work input

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2 years ago
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Which element below is the most reactive? Hydrogen chlorine neon oxygen
trapecia [35]

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