Joseph Kennedy
Glenn T. Seaborg
Edwin Mattison McMillan
Arthur Wahl<span /><span /><span />
The Ksp of Mg(OH)2 in water is 1.8 x 10-<span>11. This means that in pure water, Mg(OH)2 has a solubility of:
</span>∛[(1.8 x 10-11) / 4] = 1.65 x 10-4 mol/L
<span>which is equal to
</span>1.65 x 10-4<span> mol x (58.32) / 10 x 100 mL = 9.62 x 10-4g / 1x102 mL
If the pH is 12, the hydroxide concentration in the solvent is
10^-(14-12) = 0.01 mol/L
The solubility is solve using the formula
</span>1.8 x 10-11 = x (2(0.01 + x))^2
x = 4.5x10-8 mol/L
which is equal to
4.5x10-8 mol x (58.32) / 10 x 100 mL = 2.62 x 10-7g / 1x102 mL
Answer:
The answer to your question is the first choice
Explanation:
Perishable food is food with a limited shelf life if it is not refrigerated. Also, it is considered a perishable food the one that goes bad quickly when it leaves the fridge.
Example of perishable food:
Vegetables, Fruits, Meat, Fish, Milk, Yogurt, etc.
