115 exam 3 practice key

8/9/2019 115 Exam 3 Practice KEY

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Name:

Question 1..'stry 113 Molecular Structure

a) ionic bond

b) covalent bond

c) electronegativity

d) VSEPR

e) molecular geometry

f) polar covalent bond~

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y

~Chemistry

115 Exam #3 Review


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Name:

Question 7.~hemistry

Draw the Lewis Structure for each of the following. Also give the shape of each atom center in eachmolecule, and draw it in three dimensions. Be sure to use the model kit to construct each one..

CH3Cl

C3H6

JCi~ -fef(tJ-JJraJ1/Ifi ;,c"If

H,J \ )~H-11 c

'-- C =::::C /' f\:!ItI ./ V "H-!-IIO Wlo--I rI CAJlYAT

-tdfct hd~1Page 2 of 4

C Hs -tnqt'J11~ plCWtAl1 H 1f4 a/' )L1..J. "" -G-C:-Hv~C -=-c;- J'IWJ/' H H-)tt1t -r


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Name: ~hemistry/{ I / I

}f ~tf ~'--c- / ~ ~/~ "1 ~G ,,- ~ '--H / a\ If~ I; If--t-e-rrC{.dlO.-!

CH3COOH I C3H70H" ~" ~,

[I C/"O,/+r""hdnJ l"7>, / l' l' /fI/-~ { ~ (;f?At-r-

H Tf'ljena-fp{4A1 0.;('

CH20

~ ~"/C

If ! 'H~r{aO'1ai! f~a,

C2HSBr l-fH /.;..H\..,. /6 ~II/I') r 'r:* )) ..

-rv-f((;L.h1a/ rlatrl.yt~t- at.heelm)


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Name: ~Chem

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NH3 H2O/.

/ N" tf "'.,;"ff#-'j \H /ft1/1 . I,r(Otj1 d If'/(fL-yv\( tL-CO2 H2S

" .,i-. .. 's: ..() .:::.C ::::0 /1-"#... tr bt

C3H7I H C2H4)}f f) /f-I

f( / iff//7C'H

/C "'c /".'/ J '.,H if tf -tI'8end f!a.-lA-(


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Name: June 18, 2008LehmanSummer2008Question 11. What is the maximum,mass of CsOH that can be formedwhen 125mL of water react with 150.0 g

of Cs. The density of WI

ater is 1.00 g.

/mL.

l H-{j!)2CSO ~ 2CsOH + H212.5~L y~6>&7- /1 M.c ~,9Y ~ ~or '" 1...] I~ .0a!-}.j){SO,DoCs x~ ~ {1 t~ tM-JJ c stq-~;)C5 ~ 'WZ"

I.I?:'~ CS 1-~.Lv40~~ ~~ ~:l-~~ r~(L)~ (o.'tL\{f~.~~=-~CsO!i ~,-tk ].','2-1L

Question 12. 2.55 g of aluminumand 8.35 g of chlorine gas are placed intoa flask and the flask is quickly sealed.At the end of the reaction what is inside the container?Make sure that you write and balance thechemical equation. Be sure to explain your answer and showall work.

2A ( \-3Cl:L- --7jA- [C(32,~,,\A( 1- ~ ::. tJ, D"lLft1 ~ A1

cJ .?-1-'.1AI4 ,3t;d Cb. )(.~ = 0./1 g \llAJ ~ "-1-(.~cJ ~

1-:3 ~ ;k. ~ {}- I " I,~ AI:CI"2-O.d!Lf4 ~ At~ C9.0~lf~)~ I,~

(O,DW4)Js)~.I CJ:l-14 ~A-~ ~ W ) Alu< ~ A-\ ~ ~~~~, ~

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Name: June 18, 2008LehmanSummer2008Question8. IHowmanygramsof a 9.0%solutionof NaCIare required,whenreactedin an excessof AgN03

solution, to produce 18.0g of AgCl? JJo c..l 1'" A j IJtJs -i/ ;tic- (i-J..1..l $.DdA(l i~ w..f .4~c.{ ,(h"Ji;JtLc1t 5'i>. tJ.C/ 1tJ!)'t'!i2.)~-

(41. ~ dA3~ [.Jl A{--I 1 ",J! tLL[)('"I '~JAiL rl1?2(j S

Question9. 0.320 moles of z were formed upon the decomposition of a sample of hyJogen peroxide (HzOz).How many grams of hydrogen peroxide were decomposed? I2H )..6~ - -7 2H~o -r- 6"2... :

0. 3 2-0 A6 2- X l"",J --= X- 2~JI'lrl!=. j( ?Jf.0k~1-L:z.u 37-,~()~ (~tJ:J, /VoA.(! p~ - ==\ G.CoZ%1I2~Question 10. How many grams of Clz03 are produced when 1.35 moles of chlorine are reacted with 16.0 g of

oxygen? I l.5"2Clz+ 30z ---+2Clz03Lr, 'J- 0>- '" J~6>). .. 6J.S~k.i O~"5"Z,CJ(J()~l. 3s~ C/").-

DJ-u+k~~~/).OJ ~ CJ~y~~d2--q. -j( ,F~~cjA ~ 3~'?;;C/22-\./3

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115 exam 3 practice key

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