What+are+hydrates?

=WHAT ARE HYDRATES?=

ENTRY 1
Hydrates are substances that include water (H20) in their formula. Their chemical formula is written as: _ (chemical) **.** #H20 and it is called: chemical __(number ex. penta, tetra, di, tri....) hydrate. For instance, one hydrate used in this experiment is sodium sulfate decahydrate. The chemical formula would be NaSO4 **.** 10H2O which means for every NaSO4 there are 10 water molecules. However, this does not mean that the substance is wet. In fact, most hydrates have a dry appearance and touch. Link: http://dbhs.wvusd.k12.ca.us/webdocs/Nomenclature/Hydrate-Problem-Ans.html -Lowell Kwan__

ENTRY 2
Link: http://chemistry.bd.psu.edu/aronne/labhyds03.pdf -Lowell Kwan
 * hydrates: ionic compounds are formed in water and then isolated as solids, water molecules are trapped into the substance....making hydrates
 * since the compound is ionic, it can also be called ionic salts
 * anhydrous compound: "substance w/o water". this is what is leftover when all the water is evaporated from the hydrate. It can be calculated as: mass of hydrate = mass of anhydrous + mass of water

ENTRY 3
Chemical Formulas: What is Sodium Thiosulphate Penta Hydrate? Na2(S2O3)**.5H20** What is Sodium Sulphate Decahydrate? NaSO4 **.** 10H2O What is Sodium Acetate Dehydrate? NaC2H3O2 **.**__ I am not sure about this. Does this mean it is not a hydrate, as dehydrate indicates no water. -Lowell Back