Answer:
D) With an increase in altitude, atmospheric pressure increases as well.
Explanation:
Generally when altitude increases, the value of pressure decreases. This shows that pressure is inversely proportional to altitude. For example, the higher the altitude, the lower the pressure and vice versa. At very high altitude, the number of molecules of air are smaller than the number of moles of air at very low altitude. Thus, the higher the altitude, the lower the atmospheric pressure and the lower the altitude, the higher the atmospheric pressure. Therefore, option (D) is false.
Explanation:
Reaction equation is as follows.
Here, 1 mole of produces 2 moles of cations.
= 1.16 M
= 0.58 M
The sulphite anion will act as a base and react with to form and .
As,
=
=
According to the ICE table for the given reaction,
Initial: 0.58 0 0
Change: -x +x +x
Equilibrium: 0.58 - x x x
So,
x = 0.0003 M
So, x = = 0.0003 M
= 0.58 - 0.0003
= 0.579 M
Now, we will use = 0.0003 M
The reaction will be as follows.
Initial: 0.0003
Equilibrium: 0.0003 - x x x
=
=
Therefore,
As, x <<<< 0.0003. So, we can neglect x.
Therefore,
=
x =
x = =
=
= M
Thus, we can conclude that the concentration of spectator ion is M.
Answer:
Mg ²⁺
Explanation:
Τhe metal loses electrons and in forming Mg²⁺ ,it loses 2 electrons and hence oxidized.
Mg(s) ⇒ Mg²⁺ + 2e⁻
Momentum = (mass) x (velocity) = (1,100) x (30) =
33,000
kg-m/sec due east
Answer: capillary action
Explanation: it occurs when the adhesion forces (attraction between two surfaces or substances) in the liquid are stronger than the cohesion forces (attraction between the same molecule)