The Earth's structural zones (S-Zones) are the lithosphere, asthenosphere, mesosphere, inner core, and outer core.
C-Zone S-Zone What are they like?
Core Inner Core Found about 2,900 kilometers below
the Earth's surface. It is about 2,300 kilometers thick
The boiling point decreases as the volume decreases.
<u>Explanation:</u>
The Temperature - Volume law otherwise called as Charles law is applied, which says that the volume of the given gas at constant pressure is directly proportional to the temperature measured in Kelvin. As the volume increases, the temperature also increases, if the volume decreases, then the temperature also decreases.
As per the Charles law, here the volume is decreased from 50 ml to 25 ml so the boiling point also decreases.
Answer:
B) by first reversing Reaction 2 and then adding the enthalpy of Reaction 1 and the enthalpy of Reaction 2
Explanation:
C2H2 (g)+2H2 (g)→C2H6 (g) ΔH=−75 kcal
C2H4 (g)+H2 (g)→C2H6 (g) ΔH=−33 kcal
C2H2 (g)+H2 (g)→C2H4 (g) ΔH= ?
First step - Reverse reaction 2.
C2H6 (g) → C2H4 (g) + H2 (g) ΔH= 33 kcal
Second step - Add reaction 1 and the reversed reaction 2. This gives us:
C2H2 (g) + 2H2 (g) + C2H6 (g) → C2H6 (g) + C2H4 (g) + H2 (g)
Simplifying gives:
C2H2 (g)+H2 (g)→C2H4 (g)
The correct option is:
B) by first reversing Reaction 2 and then adding the enthalpy of Reaction 1 and the enthalpy of Reaction 2
