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Leona [35]
3 years ago
9

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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5. The strength of a gravitational force between two objects depends on
Sophie [7]

Answer:

mass and distance

Explanation:

the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled. increases, the force of gravity decreases

3 0
3 years ago
2 K + Cl2 → 2 KCI<br> How many grams of KCI (74.55 g/mol) is produced from 2.50 mol of K?
Rudik [331]

Answer:  186.3 g of KCl will be produced from 2.50 mol of K

Explanation:

The balanced chemical reaction is:

2K+Cl_2\rightarrow 2KCl  

According to stoichiometry :

2 moles of K produce = 2 moles of KCl

Thus 2.50 moles of K will produce=\frac{2}{2}\times 2.50=2.50moles  of KCl

Mass of KCl=moles\times {\text {Molar mass}}=2.50moles\times 74.55g/mol=186.3g

Thus 186.3 g of KCl will be produced from 2.50 mol of K

8 0
3 years ago
What is Zeff of phosphorus
professor190 [17]

Answer:

Explanation:

Here is an illustration showing how to "calculate" +5 as the effective nuclear charge (Zeff) for phosphorus. We are not implying that the electrons are in orbits here, this is simply showing inner shell electrons that shield the outer valence electrons from the full nuclear charge.

5 0
3 years ago
Arrange the following gases in order of decreasing density at STP. Ne, O2, F2, Cl3
kipiarov [429]

Answer: Cl₃ > F₂ > O₂ > Ne


Explanation:


1) All the gases are at the same temperature and pressure: STP (O°, 1 atm).


2) All the gases are represented by one molecule (or mole of molecules, it is the same for our puroposes).


3) As per Avogadro's law and the ideal gas equation, the same number of particles (of any gas) occupy the same volume at the same temperature and pressure.


For example, at STP the volume of 1 mol of gas is 22.4 liter.


4) Since, density is equal to mass / volume, and you assume the same number of molecules of each gas, the order of the densities is the same that the order of the molar masses.


5) Then, you just need to state the molar mass of each gas and order in decreasing order of molar mass to have the correct order for density.


6) Molar masses:


i) Ne: 20.180 g/mol


ii) O₂: 2× 15.999 g/mol = 31.998 g/mol


iii) F₂: 2×18.998 g/mol = 37.996 g/mol


iv) Cl₃: 3×35.453 g/mol = 106.359


7) Then the order is: 106.359 > 37.996 > 31.998 > 20.18 ⇒ is Cl₃ > F₂ > O₂ > Ne.


Note: the values calculate are not of densities but of molar masses. The order is what is the same.

6 0
3 years ago
Read 2 more answers
Which statement describes carbohydrates?
DedPeter [7]

Answer:

B.)

Explanation:

4 0
4 years ago
Read 2 more answers
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