Answer:
c. Boundary where air masses meet and cold air rises above warm air.
Explanation:
Answer:
The concentration of is
The number of ion is
Explanation:
Generally the solubility product constant of HgS(s) is
This solubility product constant is mathematically represented as
Since the HgS is saturated it implies that the concentration of sulfur ion is the same as that of mercury ion s
=>
=>
substituting values
=>
From above mole of is equal to 1 L
Then x mole of will be equal to 1000 L
Therefore
=>
Now the number of ions are in 1000 L of the solution is mathematically represented as
Where is the avogadro's constant which has a value of
Substituting value
Answer:
A. NaHCO₃
Explanation:
NaHCO₃ ⇒ NaOH + H₂CO₃
NaOH is a strong base and H₂CO₃ is a weak acid. Therefore, NaHCO₃ is a salt of a strong base-weak acid reaction. The salt is basic because carbonic acid (H₂CO₃) is a weak acid so it remains undissociated. So, there is a presence of additional OH⁻ ions that makes the solution basic.
Hope that helps.
Answer:
Rutherford established the nuclear theory of the atom with his gold-foil experiment. When he shot a beam of alpha particles at a sheet of gold foil, a few of the particles were deflected. He concluded that a tiny, dense nucleus was causing the deflections.