Airborne and water-borne chemicals are both local and global issues because they may be in high concentration near the source (locally) where they can do much damage to the environment. However, they can travel long distances so that chemicals produced in one country can have a harmful effect in another country.
The indication from which one can determine how much of active ingredient is recovered after purification method is said to be a percent recovery.
The formula for percent recovery is:
The solubility of acetanilide in 100 ml of chloroform at
The solubility of acetanilide in 100 ml of chloroform at
Substituting the values in the above formula:
%.
Hence, the maximum percent recovery that can be achieved for the recrystallization of acetanilide from chloroform is %.
- Magnesium hydroxide is the inorganic compound with the chemical formula Mg(OH)2. It occurs in nature as the mineral brucite. It is a white solid with low solubility in water (Ksp = 5.61×10−12). Magnesium hydroxide is a common component of antacids, such as milk of magnesia.
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Explanation:
a process for separating minerals from gangue by taking advantage of the differences in their hydrophobicity.
I believe that is accurate
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- See charge on ion is -1 .
Hence it has taken 1 electron
Now first look at EC of Fluorine(F)
- Now one electron added .hence no of electrons is 10now
Look at the EC
Or
Option C is correct.