Answer:
The correct answer is option B.
Explanation:
Solubility product is defined as the product of concentration of ions present in a solution each raised to the power its stoichiometric ratio.
The equation for the ionization of the magnesium hydroxide is given as:
xS yS
Here, S = concentration of compound dissolved in solvent via dissociation
Expression for the solubility product of will be:
As we can see,
- Higher the value of [S] more will be solubility of compound in a solvent.Hence, more soluble it will be.
- Lower the value of [S] less will be solubility of compound in a solvent.Hence, less soluble it will be.
Hence, the correct answer is option B.
Car: (convert first the units)
240 km * (1000 m /1 km) = 240000 m
2 hr * (3600 s / 1 hr) = 7200 s
v = d/t
v = 240000/7200
v = 33.33 m/s
Sprinter:
v = d/t
v = 100/9.5
v = 10.53 m/s
thus the car travels faster than sprinter by 33.33 - 10.53 = 22.8 m/s
Answer is: <span>volume of oxygen is 14.7 liters.
</span>Balanced chemical
reaction: C₃H₈ + 5O₂ → 3CO₂ + 4H₂O.<span>
m(</span>C₃H₈-propane) = 5.53 g.
n(C₃H₈) = m(C₃H₈) ÷ M(C₃H₈).
n(C₃H₈) = 5.53 g ÷ 44.1 g/mol.
n(C₃H₈) = 0.125 mol.
From chemical reaction: n(C₃H₈) : n(O₂) = 1 : 5.
n(O₂) = 0.625 mol.
T = 25° = 298.15K.
p = 1.04 atm.
<span>R = 0.08206
L·atm/mol·K.
</span>Ideal gas law: p·V = n·R·T.
V(O₂) = n·R·T / p.
V(O₂) = 0.625 mol · 0.08206 L·atm/mol·K · 298.15 K / 1.04 atm.
V(O₂) = 14.7 L.
Answer : The mole fraction of NaCl in a mixture is, 0.360
Explanation : Given,
Moles of = 7.21 mole
Moles of = 9.37 mole
Moles of = 3.42 mole
Now we have to calculate the mole fraction of .
Now put all the given values in this formula, we get:
Therefore, the mole fraction of NaCl in a mixture is, 0.360
-Observation
-analysis
- test salinity
-test temperature