54.0 ml of a 1.2 m solution was diluted to a total volume of 228 ml
USing dilution equation
M1V1 = M2V2
Where M1V1 is before dilution while M2V2 is after dilution.
Therefore;
M1= 1.20 M, V2= 54 ml,
M2= V2 = 228 ml
1.20 M × 54 ml = M2 × 228 ml
M2 = (1.2 ×54)/ 228 ml
= 0.2842 M
0.2842 × 114 ml = M2 × (114 +111)
M2 = (0.2842 ×114)/ 225
= 0.143995
= 0.144 M
Answer:
In a climatological sense, dryness is a function of both annual rainfall and evaporation
Explanation:
Sulphur dioxide is oxidised by the oxygen in the atmosphere to form sulphur trioxide, the major component in acid rain.
2SO2 + O2 - - > 2SO3
The subsequent Sulphur trioxide reacts with water in the rain/lake/river to form sulphuric acid.
SO3 + H20 - - > H2SO4
The sulphuric acid undergoes ionisation to form:
In major quantities ;
H2SO4 <----> H+ + HSO4-
And
In smaller quantities to form sulphate ion;
H2SO4 <---> 2H+ + SO4^-2
Answer:
Arsenic
Explanation:
The atom that has the lowest first ionization energy is Arsenic.
The first ionization energy is the energy needed to remove the most loosely bound electron of an atom in the gas phase in the ground state.
Ionization energy generally deals with the measure of the readiness of an atom to lose an electron.
- Generally, down a group from top to bottom, ionization energy decreases because of the increasing atomic radii and increasing shielding /screening effect on the outermost shell electrons hence the electrons are held less tightly to the nucleus.
- So, nitrogen, phosphorous and arsenic belongs to the same group and arsenic will have the least first ionization energy.
