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kati45 [8]
3 years ago
8

When an exothermic reaction releases thermal energy, this energy is usually_____.

Physics
1 answer:
saw5 [17]3 years ago
8 0

Explanation:

A chemical reaction in which heat or energy is released is known as an exothermic reaction.

On the other hand, when two objects are placed together and heat flows from hotter object to colder object then this process is known as conduction. Therefore, energy is dissipated in conduction process.

Since energy released released goes into the atmosphere and is not used anywhere.

Thus, we can conclude that when an exothermic reaction releases thermal energy, this energy is usually not useable to do work and it is dissipated by conduction.

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14 m/s in the direction of the truck
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What happens to the density of ocean water when salinity increases? A. It increases. B. It decreases. C. It becomes variable. D.
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An automobile traveling on a straight, level road has an initial speed v when the brakes are applied. In coming to rest with a c
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4x

Explanation:

Use v^{2} = u^{2} +2as to do the question.

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for second instance,

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3 years ago
In the nuclear fission process mass is converted into energy. Determine the total mass that must be converted to energy in one y
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1) Mass that needs to be converted at 100% efficiency is 0.3504 kg

2) Mass that needs to be converted at 30% efficiency is 1.168 kg

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By the principle of mass energy equivalence we have

E=mc^{2}

where,

'E' is the energy produced

'm' is the mass consumed

'c' is the velocity of light in free space

Now the energy produced by the reactor in 1 year equals

Energy=Power\times time\\\\\therefore Energy=1\times 10^{9}\times 365\times 24\times 3600\\\\Energy=31.536\times 10^{15}Joules

Thus the mass that is covertred at 100% efficiency is

mass=\frac{Energy}{c^{2}}\\\\mass=\frac{31.536\times 10^{15}}{(3\times 10^{8})^{2}}\\\\mass=\frac{31.536\times 10^{15}}{9\times 10^{16}}\\\\\therefore mass=0.3504kg

Part 2)

At 30% efficiency the mass converted equals

mass|_{30}=\frac{mass|_{100}}{0.3}\\\\mass|_{30}=\frac{0.3504}{0.3}\\\\mass|_{30}=1.168kg

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3 years ago
"18. Milliliter is equivalent to 1 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
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18 mililiter is equivilent to 0.0047551
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