Chromatography
if it dissolves it's soluble
The best method is chemical analysis.
Pure isolated chlorophyll is soluble in acetone
The best method is fractional distillation.
distillation
You don't. Pure heroin is very soluble in water.
Given that pure sodium chloride is a solid at room temperature, no it is not soluble.
Ammonia is soluble in both hot and cold water, with a higher solubility in cold water.
Yes, FeCl3 is soluble in water. It forms a greenish-brown solution when dissolved in water.
Liquid treatment is the method of applying diammonium phosphate.Specifically, diammonium phosphate rarely is applied in its pure form. But its completely soluble form is used as part of a concentrated compound fertilizer. It tends to be used as a liquid fertilizer except in Great Britain.
The best way to determine if an object is pure silver is to look for markings such as "925" or "sterling" which indicate that the object is made of sterling silver, which is 92.5% pure silver. You can also perform a silver acid test or take the object to a professional jeweler for testing.
Magnesium hydroxide is less soluble in acidic solutions compared to pure water. In an acidic solution, magnesium hydroxide can form a solid precipitate due to the neutralization reaction with the acid.