KeyE1-F2010-morn - I KEY C101 Exam 1(Form A Fall 2010 Forms...

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Unformatted text preview: I KEY: C101 Exam 1 (Form A) Fall 2010. Forms 3, C, D and E are scrambled versions of this form. 1. The elements niobium tin, and iron are represented respectively by the symbols: a. Ni, Ti, In ”a film Fa” ' Nb, Sn, Fe c. N, Sn, Fe d. Nb, Ti, In C. Ni, Sn, F e 2. What value represents 3.6006 X 10—3 correctly rounded to exactly four significant figures? a. 0.004 *. £3 W” b. 0.0036 3 (100%; Pit/0 e. 4 x 10-3 K . d. 3.600 ><10‘J 579mm. “4 #5,“ Mil— fl/‘mv ”mg “f' 3.601 x 10-3 “3.00! MD“; MM} ,3 7% mm. as 0. 00360! 3. Which is (are) responsible for the attracnon between protons and electrons in an atom? (9 Electrostaties . ’1). Strong nuclear force er’émlmfl! Mgsfa‘Yt x}; fie flea/9M} , f c. - Gravity at. um MW only Wis A: ,0. r? m ms. (1. a and b mew. e. b and e 4. Which set of elements contains an alkali metal, an alkaline earth metal, and a halogen? Li, K, I-le gran? IA LA “m . Cs, Sr, Br c. K, Be, Ne d. calcium, argon, iodine e. barium, sodium, magnesium 5. Antimony has Whih of the following? a Pb .> efemsmls Ii? #4 mm s. WW AW b. I _ madam” ,gmskgflw’swéys; none of the above 6. Which pair of terms correctly applies to potassicm? nonmetal, Group SA i “Q alkaline earth metal, Group 1A K" WW Mi Ila/M gig $35 - metalloid, s—bloek m "Sela/06!; g m; 1% MJ’ 29% halogen, nonmetal alkali metal, s~block “’1 a. b. C. I d. 7. Which would be described chemically as a mixture? 3_ Q2 sierflsn‘i' (£4 ‘91,me a... ll“! 75$} CW) 13. SC)2 Camismmg. , C9 K23 dissolved in water a, W‘X flu/Q. of Z.» lefyml fig? C9» 59 A}? an) d. a and b e. b and e V 8. Well element is misspelled? a. fluorine b. iridium C. poloniurn ‘ telurium file/lgrfptm . e. selenium 9. Which is a chemical property (or change)? {LN/mikes} oiitsflfl vi: ggmgfijfi flew ,g Mafia. a. mixing vegetable oil and water b. a sample of methane gas is compressed ”V2- (£I¢W+> MV‘Wlfia is? sea water drying up to leave a residue of salt iii/Mi ”Fla NH; (cg mf 53mg) a plant converting nitrogen gas (N 2) into ammonia (N H.) bubbles forming when a liquid is heated to its boiling point 10. mgle orbital may, at most, contain 1 electron. ' My S 2 electrons. ' 6 electrons. P— s®s s cg:- w ..' 10 electrons. more than one of the above is correct 11. The density of sodium is 9.71‘x 10—1 g/ml... What is the mass of 5.0 mL of this solid? 3. 2.0X10"'lg ml \ . .. b. 5.2 x 10-2 g (5530ng 9"...mfiwg’0 :3) fi W555 2’55)“ng c. 4.9 X 102 g cl. 5.1 g . ‘7” if @ 4.9 g I 12. Wh at is the appioximatemassu of 7 atoms of carbon— 14? 42 amu W- )? I”, amid, W. - 9'8an (:7 Wififlfi QXW "B’Qflwlw anma c. 1.4 x 10—22 amu d. 1.6 x 10-22 amu ”93%.: f aim "fa. M Q}: mi 8;: e. 5.1 x 1025 amu / l . . . _2 . éarsm game“ 13. How many milllgrams are present in ?.23 x 10 kllograms? a. 7.23 x 10—3 mg b. 7.23 X 10—4 mg £7.23 X/C’ {fig/{7% OXWW—ag 7 L} X/Qgg if? e.. 7.23 X 10—2 mg (1. 7.23 X 102 mg 6) 7.23 x 104 mg 14. Ho ow many plotons are in the nucleus of an isotope with 18 neutrons and mass number of 35? 6.9 1? / / b. 18 [3’91 )9 1% m E 35 c. 35 (1. I32 (9 a” 192‘» 3? s . . “Zr 6‘ ‘ ”gm x59 a ’1‘ a“? / 15. All matter can either be classified as: a. metal OR nonmetal b. homogeneous mixture OR heterogeneous mixture ' @ pure substance OR mixture Sizer cawi’ 3:71 waf’éfi' {0-) or" mafifiéafik (P20) (1. intensive OR extensive e. element OR compound 16. Put a nrgilliifléh, a deutezria'ui’rfiifihtom 6H), an giggle/in, and a befifliiifilignafiibhrder of increasing mass. a. neutron < deuterium atom < electron < beryllium ion 2,54- neutron <_ beryllium ion < electron < deuterium atom a 4. fl 4» ’2}! 4 £8 electron < neutron < deuterium atom < beryllium ion / deuterium atom < neutron < beryllium ion < electron ”621%; yd“ Mafia-rear} flfl‘iéfiw c. electron < neutron < beryllium ion < deuterium atom 79% Cfi‘l’ge‘" 119 (“Wm/afar)? ANS 0"6 1?. Mystery compound X melts at “175°C. It exists as a gas when its temperature is above ~40°C. e out??? At which temperature would it exist as @i:§§ ' _ 11M rifjiip' a: 21' 32°F 0% 3%} (”ME ”P if i: 3&5 was; 1W“ ' c. ~10°Cja$ ”mg"; 1\ alloy; Q 400°C e. —200°C 59K£ ”/09 flew 18. Which of the following formulas is incorrect? Ki? / I: RbBrt/ a/kefif gar-tag: ”$3.34 M chMlfi “2/ lie/6W7! ? LE2 a rifle”; ma WM; «74% N2- ew? Wégp w/ fingers; MgCl2 0/ CaBr2 V (A ,.' F wait/i lag (13K) 19. Which has more electrons" than protons? I a. a copper atom, Cu \x... it: _ 07%“ amigo! £X¢£$$ #919» fl/ifi’fig ' ( : > the bromide ion, Br— c, (11,.)gflje, riwynfi {59°38- the magnesium ion, Mg2+ d. the calcium isotope, :éCa CL 1"“ ”M {9 fig“ Q“ e. the H isotope known as tritium, 3 H 20. How much heat is required to increase the temperature of 50.0 g of tin from 255°C to 505°C? (Note: The specific heat value for tin is 0.054 cang'OC.) AT? 2 g": 0 “C, @ 68 cal 39’ .3; Mag ‘7‘” 3; ,3- inn“ 1:). 140 cal :l. 3:550:01Efl cal EST» (50: 03X?! 9% 2g: fled) 5?“ $24?ng e. . 7.4x 10—3 cal Z 1’94} 399533ch». 6’”? 5’s ‘S aim, eeW- % CV 2’1. 22. 23. 24. 25. 26. a. b. Q [1o15524d3 W d. e. // “TX a4WIE.. weigh; 69M”! #3177” 20%ng A sample of thallium weighs 5.63 X 10—9 g. Approximately how many atoms are present? a. 6.03 X 10—14 atoms b. 191 X 10—3" atoms (5"; (99; x/ c. 4.57 x 10—35 atoms ' 1.66X 10'13 atoms ' /l f. g % I 6.93 )< 10” atoms MM; ‘19” sz'im mewnlfl g I '3‘?!" Convert 4.7 x 1012 inches to miles. Note: 1 foot : 12 inches. " . 7.4 x 20" mi _ 7 :2. J fioe’fl' I m! a, m “.7 - b. 1.4x 10-81111 ($7M) yaw/{W Was w '7»; M? air/s} c. 7.4 x 108 mi - - d. 2.1 x 10” mi e. 3.0 x 10” mi Which is the correct electron configuration for an uncharged niobium atom in the ground state? [Ki-Ha" W5 [Isl—5825‘? ”at: M a a a 5‘15" (as!) a cars a was ‘1 $22522pr’3323p64323d1”41365d5 13225221363323p64s24dm4p65s25d3 a, Awash) Which neutral element is represented by the following electron configuration? W 18M ZSLL 2P LLLLLL 353i 3PLLL a. arsenic @ ' phosphorus flaming a/{M7L )4 3” a» e. chlorine W ' d bromine /§_e 5AM)” a" A A ‘ r k - FM§ e. vanadium /§}) )5 AWL filigggy P is as?” 6 Which factor would let you convert hectoliters (hi) to milliliters (mL)? Note: the prefix heeto— means 102 I AL '3 202i.“ a. ZO'SmL/hL b' mini/hi UM» ML lmL 3s: mic-gm; c. ‘IO‘mL/hL X72“: W d. 103mL/hL 5: a: o if, A ground state electron configuration for a neutral atom ends in 5133. Identify the element. W 73m. 415,9 drln'ql-WEQ, (3'54 glemgfll'm/W '27. Which of the following sets of isotopic abundance data does NOT make sense based on the t atomic weights listed in the periodic table for these elements? l 'J I» | Q neon—20, 52% and neon—22, 48% ‘yyreégkiei i when}; WQSA 7; imfl a”? b. galliurn-69, 60.1% and gallium—71, 39.9% $2919 “/92; e. rhcnium—185, 37.4% and rhenium—lST, 62.6% aisle ‘ Lag/e, d. boron—10, 19.8% and boron—11, 80.2% >9 m‘maiely 2!) éaimfifi' It 6M; 9 29835” I u w 00 u u — G ’ e. Indium 113, 4.0/ and indium 115, 96/0 41%;? E f ; (aw 2?», 20.180 28. What is the mass of 0.50 cubic meters of iron? The density of iron is 7.8 g/cm3. E a. 0.064 kg E k i 0.39 kg 3 9 mac mew 7 5? mg” g" /< 3.9 kg (39' 90 ”'3 {1%("MWfiX WX ”55%? {W3 3%” “j h. c. d. 16 kg 7‘ .. 3909 kg W667 eonmi' 3 is: 153 29. Which is the correct symbol for the ion with 26 protons, 30 neutrons, and 24 electrons? E " 56 2+ Fe g ~’ g; 26 .L c if“ g0 W Wig-.995 .34 2+ aim-Maw #5936: IS Few 25°F " all 51 b. gozn _ 50 2— z FflW‘fi- 04“ 9715 C- 240‘ g we him é; stem d. ggw- (9 Fe WmQW-gv WW 2 1'3 “5’2““ 50 1 2+ e. - MCI 30. An obiect floats in a solution whose density( is 1.05 g/mL and it sinks in a solution whose density is 0.950 g/mL. Suppose that the mass ofthe object is 5.55 g. Which of the following could be its volume? M ' k) \M ..........,...M Mg mes! W a. 5.00 ml. Aflfi/mbv {3an W VJN~ a ,- . 5.10mL Aofifi/mi‘r' ' flewflmfi m; w e. 5.29m,,9?fi/m4 L; 4,”! M e ‘ mum «a.- r @ 5.40mLAfiéj/fi’é‘” a“; “9’0? 99 03% >9 @335; e #1941!” . e. 5.90mL 035/3149“ Afi' 0M" “Ei- pom; aged” #QMIS in /&:§:§ ml, Jfitiariéemjjfi We... 66/324?" 5' [£55 agent/ass 7%3134 50:5:3/méw algae?" Mk; in Nee/mi, relish/o i Wigs. giéjeef' /:$‘ mw’e. W %m $.9§%/MZM l ...
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