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3 years ago

For a given mass of reactants, the energy released is greatest for a reaction involving

Chemistry

2 answers:

Scilla [17]3 years ago

4 0

Answer:D

Explanation:

Fusion is the coming together of two nuclei to form a heavier nucleus with release of tremendous amount of energy. The greatest energy on earth can be released only by a fusion reaction. Fusion is a high temperature process. It has been impossible to achieve fusion in such a way that its energy can be harnessed as an alternative source of energy.

kari74 [83]3 years ago

3 0

Answer: Option (D) is the correct answer.

Explanation:

In fusion reaction, two small nuclei combine together to result in the formation of a large nuclei.

Whereas in fission reaction, large nuclei dissociates into two or more small nuclei.

Nuclear fusion releases more energy as compared to nuclear fission.

For example, two hydrogen nuceli fuse together and result in the formation of helium atom along with release of energy.

$^{2}_{1}H + ^{2}_{1}H \rightarrow ^{4}_{2}He + Energy$

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After decaying for 48 hours, 1/16 of the original mass of a radioisotope sample remains unchanged. What is the half life of this

nika2105 [10]

The half life of this radioisotope is 12 hours.

<u>Explanation:</u>

The length of time it requires to break down for an initial half amount or the amount of time taken to transform half of a reactant into product. Half of a particular sample took the time to experience radioactive decay. The time it would take to degrade radioactively into another component or nuclide for half of the atoms of an unstable element or nuclide.

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3 years ago

To act as a battery, a redox reaction must have a negative voltage.<br> True or False?

LenaWriter [7]

Answer:

False

Explanation:

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3 years ago

Equal volumes of H2 and O2 are placed in a balloon and then ignited. Assuming that the reaction goes to completion, which gas wi

Sonbull [250]

Answer: Oxygen

Explanation:

$2H_2+O_2\rightarrow 2H_2O$

As seen from the balanced equation:

2 moles of hydrogen combine with 1 mole of oxygen or 1 mole of hydrogen combine with 1/2 mole of oxygen.

According to Avogadro's law, equal volumes of gases contain equal number of molecules and hence equal number of moles.

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3 years ago

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frosja888 [35]

Answer: Option (B) is the correct answer.

Explanation:

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For example, radiations from Sun help in transfer of energy or heating of object on which it falls. Like, when radiations are falling on a metal rod then after sometime the rod becomes hot due to absorption of radiations from the Sun.

Thus, we can conclude that Sunlight travels through space without the aid of fluids or solids describes how heat is transferred by radiation

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4 years ago

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