I'm not one hundred percent sure but wouldn't group selection be most harmful to the ecosystem because they cut down a group of trees all at once instead of one by one.
The answer for the following problem is mentioned below.
- <em><u>Therefore the final moles of the gas is 12.8 moles</u></em>
- <em><u>Therefore the option is "D" (12.8 moles)</u></em>
Explanation:
Given:
Initial moles () = 7.51 moles
Initial volume () = 8.15 L
Final volume () = 13.9 L
To find:
Final moles of the gas
We know;
From the ideal gas equation;
P × V = n × R × T
where;
P represents the pressure of the gas
V represents the volume of the gas
n represents the no of moles of the gas
R represents the universal gas constant
T represents the temperature of the gas
we know;
from the above mentioned equation,
V ∝ n
So,
=
where,
represents the initial volume
represents the final volume
represents the initial moles
represents the final moles
So,
=
= 12.8 moles
<em><u>Therefore the final moles of the gas is 12.8 moles</u></em>
TLDR: zero.
Based on the number of valence electrons each element has, there will be 8 electrons that need placement in the diagram. Two pairs (4 electrons) are lost to the two hydrogens to form bonds with the oxygen, so the other two pairs are left as lone pairs attached to the oxygen.
You will have two lone pairs on the oxygen in the Lewis diagram BUT the question asks for how many lone pairs would be present along the hydrogen atom.
There will be no pairs of electrons along the hydrogen atoms, because the valence shell for the hydrogen atom is satisfied with the one atomic bond established with the oxygen.
The answer to this question is actually zero.
Hey I I just just wanted wanted you you to
Ookay
1) T
2) T
3) F
Hope i helped :)