Energy, in a form of gamma rays, is <span>released when an electron and its antiparticle (positron) annihilate each other. </span>
Answer: It will take for the concentration of A to decrease from 0.900 M to 0.210 M is 28.75 s
Explanation:
Zero order reaction : A reaction is said to be of zero order if the rate is independent of the concentration of the reactants, that means the rate is directly proportional to the zeroth power of the concentration of the reactants.
Expression for the zero order kinetics:
![[A]=-kt+[A]_o](https://tex.z-dn.net/?f=%5BA%5D%3D-kt%2B%5BA%5D_o)
where [A] = concentration left after time t = 0.210 M
![[A]_o](https://tex.z-dn.net/?f=%5BA%5D_o)
= initial concentration = 0.900 M
k= rate constant =
t = time for reaction = ?
Thus it will take for the concentration of A to decrease from 0.900 M to 0.210 M is 28.75 s
Answer:
It may seem sensible to use a very low temperature in order to maximise the yield of ammonia but lower temperatures reduce the rate of reaction.
Explanation:
Answer:D
Explanation:
options A-C has the option pepsi which is an enzyme that is active in the stomach with a PH of 2.
Answer:
Answer is d, strength of London forces increases with molecular size.
Explanation:
Dispersion forces are the forces preesnt between all intermingling atoms, molecules and particles. Dispersion forces are the weakest intermolecular force, but they build up with the addition of more atoms, molecules or particles. Heat of vapourisation or boiling point is dependant on the energy required to break the bonds within the molecule/hydrocarbon in question. The build up of dispersion forces create greater intermolecular forces, which make the boiling of a substance more difficult. Hence increased hydrocarbon chain length, and the related increased eat of vapourisation is due to how the strength of the London/Dispersion forces increases with molecular size
