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Answer the following questions related to the analysis of CaBr2. (a) A student has a 10.0g...

Answer the following questions related to the analysis of CaBr2.

(a) A student has a 10.0g sample of CaBr2. Show the setup of the calculation to determine the number of moles of CaBr2 in the sample. Include units in the setup.

(b) What number, in addition to the answer to part (a), is needed to determine the number of atoms of Ca in the sample?

(c) A different student is given a 10.0g sample labeled CaBr2 that may contain an inert (nonreacting) impurity. Identify a quantity from the results of laboratory analysis that the student could use to determine whether the sample was pure.

(d) Explain why CaCl2 is likely to have properties similar to those of CaBr2.

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Answer #1

Thus we know that mole mass o molas Mass here mass = 10.0 b molon & mass of Cabr want = mcat 2 m Brno 40.078+ (79.904) 40.0789@ Inert gases have property to glow/ shine due to fluorescence so you can by fluorescence whether sample is pure or not. d Ca

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