Answer:
![470\frac{KJ}{mol}](https://tex.z-dn.net/?f=470%5Cfrac%7BKJ%7D%7Bmol%7D)
Explanation:
The activation energy represents the energy barrier that reagents must pass to transform into products (or products to transform into reagents in a reverse reaction)
For any reaction, the change in enthalpy is related to the activation energy by the equation
![\Delta H =E_{a\ direct}-E_{a\ reverse}](https://tex.z-dn.net/?f=%5CDelta%20H%20%3DE_%7Ba%5C%20direct%7D-E_%7Ba%5C%20reverse%7D)
So, the activation energy for the reverse reaction is
![E_{a\ reverse}=E_{a\ direct}-\Delta H =218 \frac{KJ}{mol} - (-252)\frac{KJ}{mol}=470\frac{KJ}{mol}](https://tex.z-dn.net/?f=E_%7Ba%5C%20reverse%7D%3DE_%7Ba%5C%20direct%7D-%5CDelta%20H%20%3D218%20%5Cfrac%7BKJ%7D%7Bmol%7D%20-%20%28-252%29%5Cfrac%7BKJ%7D%7Bmol%7D%3D470%5Cfrac%7BKJ%7D%7Bmol%7D)
Answer:
When considering phase changes, the closer molecules are to one another, the stronger the intermolecular forces. Good! For any given substance, intermolecular forces will be greatest in the solid state and weakest in the gas state.
In the case of melting, added energy is used to break the bonds between the molecules. ... If heat is coming into a substance during a phase change, then this energy is used to break the bonds between the molecules of the substance. The example we will use here is ice melting into water.
We need to see your problem/question you’re talking about to answer it
excitatory amino acids are the amino acids helps in transformation of neurotransmitters or it helps in transmission of synapsis rapidly in brain of mammal. EAA known to be neurotransmitters for Central nervous system.
Excitatory amino acids count may vary from 50’s to 100’s. They are mostly composed of non-protein- amino acids obtained from algae or fungi.
The possible EAAs are Glutamate (Glu) and Aspartate which act as excitatory neurotransmitters in the brain. They get released from neurons where they induce excitation via metabotropic Glu receptors.
Both glutamate and aspartate having excitatory effect on neurotransmission whereas Gama-amino butyric acid having inhibitory effect on neurotransmission.
Thus, the statement ‘neurotransmitters are chemical brother of gaba’ is indicating the complementary effect of each other.
Answer: Mars
Explanation: The planet of Mars is the only planet of all that is terrestrial. Jupiter, Saturn and Neptune are all Jovian Planets. The answer to the question is Mars. Hope this answer helps you!