Answered: Answer the following questionsn related…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Answer the following questionsn related to the analysis of CaBr₂.

a.) A student has a 10.0 g sample of CaBr_2. Show the setup of the calculation to determine the number of moles of CaBr₂ in the sample. Include units in ththe 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 10.0 g 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 those of CaBr_2.

a) A student has a 10.0 g sample of CaBr2. Show the setup of the calculation to determine the number of moles of CaBr, in the sample Inclu
calculations.)
B IU
x X2 5
2 三
Molar mass of CaBr2 199.886 g/mol
1 mole = 6.022 x 10^23
%3D
10.00 g*6.022 x 10423 / 199.886 g/mol
just in case - 0.30127 mol
D IROO
L LE LI
(b) What number, in addition to the answer to part (a), is needed to determine the number of atoms of Ca in the sample?
ali
B IU
X X2 5
LTTETOE
IF
ग
231
TNENT
मोस भा भदि टर्ट
acer

(c) A different student is given a 10.0 g sample labeled CaBr2 that may contain an inert (nonreacting) impurity. Identify a quantity from the res
to determine whether the sample was pure.
B IUX
x
X2 5 C
2 三
(d) Explain why CaCl2 is likely to have properties similar to those of CaBr2.
B IU X
x X2 5
acer
II
!!

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