Answer:
The enthalpy change in the the reaction is -47.014 kJ/mol.
Explanation:
Volume of water in calorimeter = 22.0 mL
Density of water = 1.00 g/mL
Mass of the water in calorimeter = m
Mass of substance X = 2.50 g
Mass of the solution = M = 2.50 g + 22 g = 24.50 g
Heat released during the reaction be Q
Change in temperature =ΔT = 28.0°C - 14.0°C = 14.0°C
Specific heat of the solution is equal to that of water :
c = 4.18J/(g°C)
Heat released during the reaction is equal to the heat absorbed by the water or solution.
Heat released during the reaction =-1.433 kJ
Moles of substance X= 
The enthalpy change, ΔH, for this reaction per mole of X:
Answer:
a substance that can be dissolved by a solvent to create a solution
Explanation:
Answer: A nuclear accident
Explanation:
The Chernobyl nuclear accident is level 7 (according to the International Nuclear Event Scale)<u>, due to the high impact that caused serious consequences on the environment and living beings.</u>
It should be noted that what happened in Chernobyl is considered one of the largest nuclear disasters in human history, because after the accident a large cloud with radioactive particles was found at a high altitude, scattering radiation all over the planet.
Furthermore, it is important to note that although the survival of wildlife in the Chernobyl region has currently been observed and some people still visit the site and others live there, the presence of humans in the place is prohibited.
The kinetic energy of a charged particle is related to the electric field potential via the following equation:
1/2*m*v² = q* E -----(1)
where m = mass of the particle
v = velocity
q = charge
E = potential
since kinetic energy KE = 1/2mv², eq (1) can be written as:
KE = q*E
i.e kinetic energy of a charge is directly proportional to the strength of the electric field potential (E)
Therefore, as the charge moves from a higher to a lower potential, its kinetic energy will also decrease.
Ans: B)
The kinetic energy decreases
