Answer:
77%
1.98/2.57= 0.770428016 = 77%
Kinetic energy is proportional to the velocity squared, so increasing in velocity will have an exponentially greater affect on translational kinetic energy. if you doubled the mass of an object it will double only it’s kinetic energy, but doubling the velocity of the object will quadruple its velocity.
Answer : The enthalpy change for the reaction,
Solution : Given,
(1)
(2)
(3)
Now we have to calculate the enthalpy change for this reaction by doing:
Therefore, the enthalpy change for the reaction,
The overall enthalpy of reaction will be calculated from enthalpy of formation of products and reactants.
DeltaHrxn = [Sum of enthalpy of formation of products] - [sum of enthalpy of formation of reactants]
DeltaHrxn = 3 X deltaHf (H2O) - [ 3 X DeltaH (H2) + DeltaH (O3)]
DeltaHrxn = 3 X (--242) - [ 0 + 143] = -869 kJ / mole
We can also calculate the enthalpy of reaction from bond energies
A particle is defined as a small potion of matter. From its definition, then a single atom can be considered as an atom. This is because an atom is the smallest unit of matter. Also, a molecule can be considered as a particles since it is a small portion of a certain object.