Question

Проведите энергетический расчет реакции и выясните,выделяется или поглащается энергия в этой реакции: 2He4 + 2He4 → 3Li7 + 1H1.

Answer 1

Все данный есть в таблице Менделеева. Если сумма атомной массы слева больше, чем справа, то энергия выделяется. Если наоборот, справа атомная сумма больше, чем слева, то поглощение энергии. В нашем случае энергия выделяется. Во вложении все объяснено.

Удачи.

Answer 2

Energy Calculation for the Reaction: 2He4 + 2He4 → 3Li7 + 1H1

To calculate the energy released or absorbed in the given nuclear reaction, we can use the concept of nuclear binding energy. The nuclear binding energy is the energy required to completely separate the nucleus of an atom into its individual protons and neutrons. The difference in the total binding energy of the reactants and products will determine whether energy is released or absorbed in the reaction.

The nuclear binding energies for the isotopes involved in the reaction are as follows: - Helium-4 (He4): 28.296 MeV - Lithium-7 (Li7): 39.244 MeV - Hydrogen-1 (H1): 7.2889 MeV

Using these values, we can calculate the total binding energy for the reactants and products and then determine whether energy is released or absorbed in the reaction.

The nuclear reaction can be balanced as follows: 2He4 → 3Li7 + 1H1

Energy Released or Absorbed:

The energy released or absorbed in the reaction can be calculated using the difference in the total binding energy of the reactants and products.

The total binding energy of the reactants (2He4 + 2He4) is: 2 * (28.296 MeV) = 56.592 MeV

The total binding energy of the products (3Li7 + 1H1) is: 3 * (39.244 MeV) + 7.2889 MeV = 124.0219 MeV

The difference in binding energy (reactants - products) is: 56.592 MeV - 124.0219 MeV = -67.4299 MeV

Conclusion:

The negative value indicates that the total binding energy of the products is greater than that of the reactants, which means that energy is released in the reaction. Therefore, in the given reaction: Energy is released in the form of radiation or kinetic energy.

This calculation demonstrates that the given nuclear reaction results in the release of energy.