Answer:
5
Explanation:
Let us look at the values very closely. It is easy to see that the first to the fifth ionization energies of the element are closely related to each other. Recall that the ionization energy increases as the the number of electrons removed from the outermost shell of the atom increases. Hence E1<E2<E3......... The first five ionization energies suggest the removal of valence shell electrons.
However, the sixth and seventh ionization energies shows a jump, the ionization energy suddenly increases by a very high magnitude. This can not suggest the removal of a valence shell electron but the removal of inner or core electrons. Hence the answer.
The correct answer is C.
Burning is a chemical change. It's a chemical process that includes oxygen.
All the other options are a change of state: form solid to liquid, or from liquid to gas (as in the last one).
Answer:
Pully
Explanation:
I would think that a pully would be most effective for lifting it Up and into the apartment (at least if you have a suitable spot to put the pully)
This is due to the different properties of the depth of the earth. The interior of the earth is made of heavier metals such as nickel and is hotter than the upper layers. The great pressure in these deep depths keep the elements from melting even at very high temperatures. The upper layers are made up of lighter elements such as iron and magnesium - and are less dense. These layers experience less pressure and temperatures than the deep interiors. Therefore their properties is a bit different. This also allows these layers to be semi-plastic than the soil core.
Answer:
Petroleum and treating meals.
