Which soil horizon is mostly composed of organic matter?
It is only between 5 to 10 inches thick and consists of organic matter and minerals. This is the soil layer where plants and organisms primarily live. B: This layer is also called Subsoil. It is mostly made of clay, iron minerals as well as organic matter, which has been washed down to this horizon by rainwater.
At constant pressure a known moles of gas has volume which is directly proportional to temperature (Charle's Law)
Thus V α T
Therefore
V1/V2 = T1 /T2
V1 = initial volume = 10 L
T1 = initial temperature= 280 K
V2 = final volume = 20L
T2 = final temperature = ?
T2 = T1V2 / V1 = 280 X 20 / 10 = 560 K
Thus the new temperature will also doubles up as volume is increased by two times
Given what we know, we can confirm that when carbon and nitrogen form a covalent bond, they will share two electrons between them.
<h3>What is a covalent bond?</h3>
- A covalent bond is when two atoms bond through the sharing of electrons.
- This is one of the most common forms of bonding.
- This is done in order to complete the octet of electrons in their outer shell and achieve stability.
Therefore, given that the covalent bond formed between nitrogen and carbon in the formation of isocyanic acid entails the sharing of electrons, we can confirm that these atoms will share two electrons in order to complete the octet of the nitrogen atom.
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Answer:
+60 kJ
Explanation:
Activation energy = PE(AB) - PE(A+B) = 100 -40 = +60 kJ
Answer:
v = 660 miles per hour
Explanation:
Given that,
The distance covered by the airplane is 1650 miles
Time taken by airplane is 2 hours 30 minutes
We need to find the average speed of the airplane. The total distance covered divided by total time taken is called the average speed of an object.
We know that,
1 hour = 60 minutes
⇒ 30 minutes = 0.5 hour
So,
Hence, the average speed of the airplane is 660 miles per hour.