Answer:
I think 4 days
Explanation:
I just think it is 4 i think i am worng tho
Answer:
Energy levels : It refers to the shells of definite energy in which electron revolves around the nucleus .
Explanation:
As we know, that atom consist of small dense mass that is nucleus and around it the shells of definite energy are present .
We also know ,atom consist of sub atomic particles that is :
- In shells the electrons are present and are not stationary (they are revolving ).
- The electron never absorbs or releases energy by itself .The electron in shells have definite energy that is the reason the shells are referred as energy levels .
- But, when we supply energy to electron which is more than the energy of the shell then it gets excited to higher energy level (depending upon magnitude of energy supplied ).
- The higher energy level is regarded as excited state .
- The excited states are always unstable .
- So, electron revolves there for short span of time but ultimately it returns to its own shell and by doing so it release the energy absorbed by it .
- The energy released is actually a difference in the energy of ground state (original state ) and energy of excited state .
- ΔE=E₂-E₁
Answer:
The final pressure of the carbon dioxide gas will 11.84 atm.
Explanation:
Moles of carbonic acid =
According to reaction, 1 mol of carbonic acid gives 1 mole of carbon dioxide gas.
Then 0.9677 moles of carbonic acid will give :
of carbon dioxide
Moles of carbon dioxide gas = n = 0.09677 mol
Volume of soda bottle =
Pressure of the carbon dioxide gas = P
Temperature of the carbon dioxide gas = T = 298 K
(ideal gas law)
The final pressure of the carbon dioxide gas will 11.84 atm.
Answer:
Isotopes
Explanation:
iso means the same like in triangles (isosceles) so the atoms are the same element but different in mass. Since the isotopes have the same number of protons and electrons the isotopes have much the same chemical behavior. Since the isotopes have different numbers of neutrons the nuclear behavior differs.
Rounded to 1 significant figure, 25 m would go to 30. This is because 0 isn't significant, so the 3 is the only significant figure.