Answer:
See explanation and image attached
Explanation:
During beta emission, neutrons are converted into protons and electrons. The anti neutrino balances the spins.
When a nucleus undergoes beta emission, the mass number of the daughter nucleus produced in the process is the same as that of the parent nucleus but the atomic number of the daughter nucleus increases by one unit.
The product of the beta decay of the nuclides shown in the question is described in the image attached to this answer.
In order for a cellular device to operate, it requires battery power, otherwise known as energy.
or you can do this
Us humans consume food so that we can have the sufficient energy to accomplish tasks.
The answer is 4.9 moles of salt will be needed to add to 1 kg of water to change the boiling point by 5 °C.
<h3>What is Boiling Point Elevation ?</h3>
Boiling point elevation is the phenomenon that occurs when the boiling point of a liquid (a solvent) is increased when another compound is added, such that the solution has a higher boiling point than the pure solvent.
Boiling point elevation occurs whenever a non-volatile solute is added to a pure solvent.
ΔT = i * Kb * m
where m, Kb and i are the molality of solution, ebullioscopic constant and Van't Hoff factor respectively
The data given in the question is ΔT = 5 °C
mass of solvent = 1 kg
Kb = 0.51 °C/(mol/kg)
Van't Hoff Factor for NaCl is 2
Substituting the values in the above equation
moles of salt = 4.9
Therefore 4.9 moles of salt will be needed to add to 1 kg of water to change the boiling point by 5 °C.
To know more about Boiling point elevation
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Answer:
This question is hard :( I dont know im so sorry
Explanation:
I would say C. petroleum
A is wrong
B is impractical for "mainly used"
D thats too expensive
