Homework Help: Chemistry

Posted by Roxanne on Sunday, March 3, 2013 at 6:42am.

What is the expected mass of anhydrous salt formed after the waters of hydration of CoCl2·6H2O are driven off completely by heating, resulting in a mass loss of 2.000 g water?

Chemistry - Anonymous, Sunday, March 3, 2013 at 8:01am
What is the colour of lead
Chemistry--- Roxanne - Devron, Sunday, March 3, 2013 at 10:44am
CoCl2·6H2O ----> CoCl2(s) + 6H20(g)

****H2O is lost as a gas.

2g of H20*(1 mole/18 g of H2O)=moles of H20

moles of H2O*(1 mole of CoCl2/6 moles of H20)= moles of CoCl2

moles of CoCl2*(129.89g/1 mole)= mass of CoCl2
Chemistry---- Anonymous - Devron, Sunday, March 3, 2013 at 10:45am
Bluish-white color

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