1.) A student was asked to identify an unknown hydrate by following the procedure described in this module. After heating and cooling, a 2.752 gram sample of this unknown weighed 1.941 grams. Students were given a list of possible compounds from which to identify their unknowns: LINO3 3H20, Ca(NO,)2•4H20, and Sr(NO3)2•4H20. a.) Calculate the percent water in the student's unknown. b.) Could the unknown possibly have been Sr(NO)2•4H,0? Briefly explain. Show work. c.) What is the probable identify of the student's unknown? d.) Based o the student's results and your answer to c., what is the most probable source of error in the experiment?

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Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.