Question

1.suppose you were given a sample of iodine crystals, asampleof antimony, and a sample of mixture of iodine and antimonythathad been ground together to form a fine powder ofuniformconsistency. look up the physical and chemical propertiesofboth iodine and antimony. then list the properties of eachelementthat you believe would be useful in separating andrecovering themfrom the mixture. on the basis of theseproperties, devise aprocedure to separate the two elements fromthe mixture and recoverthe separate element.

2. suppose you heat three solids in open vessels and thenallowthem to cool. tje first gaims mass, the second losesmass, and themass of the third remains unchanged. how canyou reconcile thesefacts with the generalization that in achemical reaction the totalmass of the reating materials is equalto the total mass if theproducts?

4. An ice cube melts at room temperature and water freezesattemperature of 0 degree cel. and below. from thesefacts, what canyou infer concerning the relationship between thetemperature of asystem and the influence of the entropy factor onthe change thatthe system undergoes?

please answer the question ......