3. (C) Hydrogen reacts with chlorine to form hydrogen chloride.
H (9) + Cl (9) ► 2HCl(9)
The reaction is exothermic.
Draw and label the reaction profile diagram for this reaction, identifying the
activation energy.
(3)
heat energy
progress of reaction

if two electrons have the same n, the same ℓ, and the same ml, then they are in the same orbital. the pauli exclusion principle states that no two identical fermions (a fancy word for electrons and other subatomic particles like electrons) may occupy the same quantum state in an atom simultaneously.

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

може ли да зареждате повече информация, моля