Answer:
37S
Explanation:
Radioactivity is the spontaneous emission of particles and / or electromagnetic radiation by unstable atomic nuclei leading to their disintegration.
We have two main types of radioactivity: radioactive decay and artificial transmutation.
In radioactive decay ( natural radioactivity ), a naturally occurring radioactive element like Uranium-238 disintegrates or decays into more stable isotopes with the emission of particles and/or radiation.
23892U = 23490Th + 42He
Artificial transmutation is the collision of two particles where one particle captures the other used to bombard it. There is subsequent production of isotopes similar or different from the bombarded particle. Neutrons, alpha particles ( helium nucleus ), electrons, protons can be used to bombard elements.
147N + 42He = 178O + 11P
For the above question which is artificial transmutation, the reaction equation is
4018Ar + 10n = 3716S + 42He
So, the neutron capture by Argon-40 will produce a radioisotope Sulphur-37 with the emission of an alpha particle.
Answer:
We need the picture to answer the question
Explanation:
but i did do this test and number 4 was biotic and number 5 was abotic hope this helped
Answer : The internal energy of the system within the cylinder increase during the change.
Explanation :
Endothermic reaction : It is a type of chemical reaction in which the energy is absorbed from the surrounding and given to the system.
Exothermic reaction : It is a type of chemical reaction in which the energy is released into the surrounding.
The formula of internal energy is:
The internal energy is temperature dependent.
As, temperature increases internal energy will be increases and vice-versa.
As per question, if the process is endothermic, that means the heat is supplied to the system. Hence the internal energy of the system within the cylinder increases as temperature is increasing.
Hence, the internal energy of the system within the cylinder increase during the change.
Answer:
0.66 × 10⁴² mol
Explanation:
Given data:
Moles of water = ?
Number of molecules of water = 3.99× 10⁶⁵ molecules
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
For example,
1 mole = 6.022 × 10²³ molecules of water
3.99× 10⁶⁵ molecules × 1 mol / 6.022 × 10²³ molecules
0.66 × 10⁴² mol
