Answer:
(C) Energy is released when the electron is ejected from the atom.
Explanation:
In the Bohr model of the atom, electrons are arranged in energy levels. The electrons in the lowest energy levels are nearest to the nucleus. An electron may move from a lower to a higher energy level by absorbing energy that is equal to the difference between the energies of the higher and lower energy level.
The potential energy of all electrons inside the atom have negative values and an electron which is infinitely far from the nucleus has an electrostatic potential energy of zero.
Energy is absorbed when an electron is removed from the atom (ionization). Hence the process is highly endothermic. Therefore it is false to say that "Energy is released when the electron is ejected from the atom."
Marie Curie in 1898
Hope this helps
Answer: The change in volume will be 9.30 L
Explanation:
To calculate the new pressure, we use the equation given by Boyle's law. This law states that pressure is directly proportional to the volume of the gas at constant temperature.
The equation given by this law is:
![P_1V_1=P_2V_2](https://tex.z-dn.net/?f=P_1V_1%3DP_2V_2)
where,
are initial pressure and volume.
are final pressure and volume.
We are given:
![P_1=0.950atm\\V_1=35.0L\\P_2=0.750atm\\V_2=?L](https://tex.z-dn.net/?f=P_1%3D0.950atm%5C%5CV_1%3D35.0L%5C%5CP_2%3D0.750atm%5C%5CV_2%3D%3FL)
Putting values in above equation, we get:
![0.950\times 35.0L=0.750\times V_2\\\\V_2=44.3L](https://tex.z-dn.net/?f=0.950%5Ctimes%2035.0L%3D0.750%5Ctimes%20V_2%5C%5C%5C%5CV_2%3D44.3L)
The change in volume will be (44.3-35.0)L = 9.30 L
Answer:
there might be different chemicals in each thing so the effects are different