Answer the following questionsn related to the analysis of CaBr2. a.) A student has a 10.0 g sample of CaBr2. 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 CaBr2.
Answer the following questionsn related to the analysis of CaBr2. a.) A student has a 10.0 g sample of CaBr2. 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 CaBr2.
Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter15: Solutions
Section: Chapter Questions
Problem 38CR
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Answer the following questionsn related to the analysis of CaBr2.
a.) A student has a 10.0 g sample of CaBr2. 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 CaBr2.
Transcribed Image Text: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
Transcribed Image Text:(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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