Answer:
B) Ksp = 3.7 E-11
Explanation:
CaF2 ↔ Ca2+ + 2F-
S S 2S,,,,,,,,,,,,,,,in the equilibrium
⇒ Ksp = [ Ca2+ ] * [ F- ]²
⇒ Ksp = S * ( 2S )²
⇒ Ksp = 4S³
⇒ Ksp = 4 * ( 0.00021 )³
⇒ Ksp = 4 * 9.261 E-12
⇒ Ksp = 3.704 E-11
Answer:
mixtures containing substances
Explanation:
# Carry on learning
Answer:
At the Earth's surface, wind blows horizontally from high pressure to low pressure areas. The speed is determined by the rate of air pressure change, or gradient, between the two pressure areas. The greater the pressure difference, the faster the winds.
- sciencing
The Four Forces That Influence Wind Speed & Wind Direction
Explanation:
Answer:
Option C, 3 molecule is correct
Explanation:
The formula is of Ferric oxide
3Fe2O3
The number 3 ahead the chemical formula represents the number of molecules of the given substance. In general the formula of iron (III) oxide is Fe2O3
Since there are three molecules of it hence the formula is written as 3Fe2O3
Option C, 3 molecule is correct
<h3>
Answer:</h3>
The concentration of the diluted salt solution decreased
<h3>
Explanation:</h3>
When a solution is diluted the concentration of then solution decreases and the volume of the solvent increases.
In this case;
The initial concentration is 0.50 M
The initial volume is 10.0 mL
The volume after dilution is 100 mL
We are required to determine the change in the final concentration;
According to the dilution equation;
M1V1 = M2V2
M2 = M1V1 ÷ V2
Therefore;
M2 = (0.5 M × 10.0 mL) ÷ 100mL
= 0.05 M
Therefore, the concentration of the solution decreased after dilution.
