C4HW1 3rd - <_‘(our looatlon Assessments> VIew All...

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Unformatted text preview: < _‘(our looatlon: Assessments > VIew All Submlsslons >View Attempt View Attempt 3 of 5 Tltle: me1 I Started: September 25, 2am 2:o5 PM Submltted: September 25, 2am 2:45 PM | Tlrrle spent: o 27 Tntfll SCOPE: 10/12 =83.3333% Total score adjusted by 0.0 Maxlmum possloie score: 12 i whleh of the following substances is a strong electrolyte in aqueous solution? student Response Correct Ans-ta KI E moon? 5 O Score: 1/1 How many total moles of lens are released when the foliowlng sample dlssoives completely ii'i water? ossz moi KZHPO4 (Assume that the hydrogen phosphate lon remalns Intact ln solution.) student Response Correct Answer 1.53 moi 0.352 moi 1.15 moi a 3.06 moi WP??? 1.91 moi Score: 0/1 A soiutlul’l l5 0.0950 M lrl NaCi, 0.0860 M ll'l C302 and 0.0520 M In Aicb. What ls the CDI'ICel'ltratlun qul 7 Student Expense Correct Answer a A. 0.453 a B. 0.243 C. 0.329 D. 0.335 E. 0.357 Score: Ill A solutlon has 7.81 g of soolum carbonate In 0.446 L. What ls Its soolum Ion concentratlon ln mollL? Do not enter unlts WIth your answer. Student nape-use ()onect Answer Answer: .330 0.330 Score: 1/1 A ’(aq) 4- X1311) "*(aa) +0H (an) —" "25(1) + M +180) 4- X181?) What two observalions could be made if [he enqxfnt il [be fiuafion above '5 exceeded? A. The soluIion i1 Ihe flask wi become cleat agai1 and Ihe solubon wi be basic. B. Thesohtionillheflaskwibepiiand fliefllionwibeaciic. C. The solulion 'n the flask wl become cleal agail and die solulion wl be acitic. aD.fliesohlionillheflaskwibecomepikandlhesohlionwibebasic. a E. mung wi happen except Ihe solulion wi be pennanenlly pilk. Score: 1/] Ill Ihe leaction of 30 III of 0.15 M HG wifll 35 nl of 0.10 M NaOH, wlich of Ihe folowiig Statement. best desctires Ihe resultilg sobltion? A. The acid has been neuuaized. B. Anolhel 5 ml of acid must be added [0 neubaize Ihe sollllion. C. Anolhel 5 III of ham "mt be added to neuttaize Ihe million. D. The million '5 basic. B E. The solulion is acidc. H Scote: ll] When aqueous sohbons of I§a(OH)2 and H1504 aIe nixed, a [eaclion occus. What ions. if any, ate Ihe spectalot ions i1 Ibis [eaclion? A- 332+ and air 5- H+ and 504 ' C- 332+ and 504 ’ a 0- H+ and OH' E. There ale no spectaloi ions siice al of flieln react. l 5Com: 0/] which of die folow'ng substances '5 not settle iI watel? A. "C! e B. Pbcu a c. NaNC>3 ll). ll. 12. D. 01:12 E. KOH Scone: 1/1 Give Hie oxidalion number of: (i) calbon 'II 0314 (I) carbon i'l "31(2104 B A. (i) +4 (i) +3 a a. (i) +4 (i) +4 c. (i) +4 (i) +3 I). (i) -4 (i) +3 E. None of these Scote: 1/1 In [he equation diown below, which species, if any, i; die leduc'lig agent? Equation: (2:207; + 20K ??? 2cm4 ’ + H20 A. 02 2- C- 0042’ D. H20 B E. "one of Elem. si'ice it is not an oxidalion [educlion Ieaclion. a 3‘ owe: 1/1 What is Hie concenhalion of chloride ion ii 229 ml. solulion if Ilie adcllion oi excess siver nihale piecbitales 8.07 g siver chloride? A. 0.33 B. 0.00025 C. 0.99 u. 0.49 B E. 0.25 a Scone: 1/1 What ale Hie coefficients ii [tent of CZH60 and CZH4O when Hie eqlialion g'ven below is balanced? The leaclion occus ii aqueous acid. Equalion: CZHGO + 0207? + H’r => C2H4O + H20 + Cr“ .n mWJUNI-n mwwwt-n Scone: 1/1 ...
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