When the climber ascend the mountain, the ambient pressure decreases with altitude. If the climber does not acclimate, then the lungs will expand to counteract this change in outside pressure. If the decrease in outside pressure is too fast or too great, then the lungs will explode.
Answer:
linear or trigonal planar
Explanation:
The molecular formula AB have the following criteria:
A= the central atom
B= directly bonded atoms.
In Molecular Geometry, Molecular Formula AB can either be Linear or Trigonal Planar.
In linear geometry, they are formed as a result of Sp hybridised orbital. Sp hybridised orbital involves blending of one s-orbital and one p-orbital to produce a hybrid orbital directed along a straight line, therefore making it linear e.g CO , HCN etc.
In Trigonal Planar, they are formed as a result of Sp hybridised orbital. Sp hybridised orbital are formed by mixing of one s-orbital and two p-orbitals to produce orbitals which are coplanar and the lobes directed towards the corners of an equilateral triangle. (Trigonal Planar) e.g BF , , SO etc.
Answer:
Resonance structures for the nitrate ion exist because there are more than one Lewis Structures for this ion.
Explanation:
How many bonds in each nitrate ion?
To answer this question, start by considering how many electrons each atom need for an octet.
- Each N atom needs three electrons to achieve an octet.
- Each O atom need two electrons to achieve an octet.
The three O atoms and one N atom in each nitrate ion will need electrons in total to be stable. However, the ion carries a charge of . In other words, atoms in the ion have already acquired one extra electron. Now they need only electrons.
Atoms share electrons by forming bonds. In effect, each chemical bond (a pair of shared electrons) adds two electrons to the bonding atoms. Atoms in the nitrate ion will form chemical bonds.
However, there are only three bonding position available. One of the three positions will see a double bond while each of the other two will see a single bond. However, the double bond can be at any of the three bonding position. There are thus three possible Lewis Structures. See the sketched. Note that the three structures are interconvertible by moving only the electrons but not any atoms. Hence the name resonance structures.
Keep in mind that in reality, the pi electrons from the double bond are delocalized across all three possible bonding positions. All three N-O bonds are of equal length.
Answer:
<h2>111 kPa</h2>
Explanation:
The new pressure can be found by using the formula for Boyle's law which is
where
P1 is the initial pressure
P2 is the final pressure
V1 is the initial volume
V2 is the final volume
Since we're finding the new pressure
We have
We have the final answer as
<h3>111 kPa </h3>
Hope this helps you