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1027 Spring 2011 Exam 4 Answer Key and Solutions

1027 Spring 2011 Exam 4 Answer Key and Solutions -...

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Unformatted text preview: “"““—"'_“‘m. M. .l n 1» )\ TEMPLE UNIVERSITY APPLICATIONS OF CHEMISTRY (1027) EXAM 4 April 29, 2011 TEST CODE 02 Name PLEASE FOLLOW STRUCTIONS CAREFULLY TO ENSURE THAT THE GRADING OF THIS EXAMINATION IS DONE IN A TIMELY FASHION USE # 2 PENCIL ONLY ON YOUR ANSWER SHEET UNDER OPTIONAL CODES, TEST CODE, WRITE IN AND BLOCK # 02 ALSO WRITE THE COLOR OF THE EXAMINATION ACROSS THE TOP OF THE ANSWER SHEET. BLOCK IN YOUR NAME AND YOUR TEMPLE IDENTIFICATION NUMBER ON THE ANSWER SHEET. (DO NOT USE SS#) SIGN YOUR NAME ON THE BACK OF THE AN SWER SHEET IN THE PLACE MARKED SIGNATURE. ALSO, SIGN THE TEST BOOKLET. BE SURE TO CHECK YOUR ANSWER SHEET PERIODICALLY TO MAKE SURE YOU ARE FILLING IN THE BLOCKS THAT YOU INTEND TO. DO NOT LEAVE ANY BLANKS, YOU MAY GET LUCKY. HAND IN BOTH YOUR ANSWER SHEET AND TEST BOOKLET. Avogadro Number 6.02 x 1023 Gas Constant R: 0.0821 L atm K mol 1— —8 314 J K'lmol'l Placnk Constant h= 6. 626 x 10 34 J- s/photon C= 3. 00 x 108 ms F= 96,500 C STP 1 atm = 760 mmHg = 760 Torr = 101.3 kPa and 0°C Kb: 051°C m‘l Kf= 1.86°C m"1 1 calorie (cal) = 4.184 Joules (J) 1 mile = 5,280 ft = 1.609 km Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) What is the molecular geometry of PH3? 1) .‘ bent .1? ., *igonal pyramidal , , p \ tetrahedral q ‘ D) linear g:%>‘i‘e E) not enough information 2) Calculate the frequency of the red light emitted by a neon sign with a wavelength of 659.9 nm. 2) A) 1.98 x 1014 s-1 B) 3.32x1014 s—1 C 2 111/” C) 2.20 x 1014 s-1 3 D 5.05x10148'1 V: C N 3.09%1') $4". @555 x 1014 5—1 7 ” _ Kg 2 Q2571 ? 2610 M 3) Calculate the wavelength (in mm) of a the red light emitted by a neon sign with a frequency of 3) 4.74 x 1014 Hz. A) 466 nm , B) 158 mm C) 704 nm @6;3— nm E) 142 nm ‘2? W 4) What is the electron configuration for Ga? A; 1s22522p63523p53d104s24p1 1522522p63523p64523d104p1 C)1522522p63523p63a~1-04524p6 my?“ 1+. M f D) 1522522p63523p64524d404p1 M M E) none of the above 5) Calculate the energy of the orange light emitted by a neon sign with a frequency of 4.89 x 1014 5) Hz. .alljgjzi L- QAW2<C1 GLQKZQPBIle’BXL-f 87kt A!) C) 6.14 x 10-19 J D) 3.09x10—19J T33 Llé y I 0'” ((1? E) 1.63 x 10-19 J 6) How many valence electrons are in the ' te ion? 6) A) 22 B) 18 < C) ¥4 D) 26 E) 23 N03.— 1 Sitféke) +/ :2 2L/ 7) The n = 3 principal shell is the lowest that may contain a d—subshell. A) 1 B) 2 ) 4 3 not enough information 8) Which form of electromagnetic radiation has photons with the highest energy? A) Radio Waves B) Infrared Radiation —rays mama Rays ’crowaves ' 9) Lewis structure below correctly represents KCl? + _ [ : C1: ] B) K: Cl: C) K [911‘ D) :If: :C:l: E) none of the above 10) How are wavelength and frequency of light related? A) Wavelength is double the frequency. B) Wavelength is independent of frequency. El Wavelength increases as frequency increases. Wavelength increases as the frequency decreases. Wavelength is one—half of the frequency. 11) What is the correct order of the electromagnetic spectrum from shortest wavelength to longest? V A) Gamma Rays—>X-rays—>Visibie-Eight—>Ultraviolet Radiation—>lnfrared Radiation —>Microwaves—>Radio Waves .Gamma Rays—>X-rays—>Ultraviolet Radiation—>Visib1e Light—>Infrared Radiation —>Microwaves—>Radio Waves C) Gamma Rays—>X—rays—>Iflrared-Radi&t—ien.7>Visible Light—>Ultraviolet Radiation —>Microwaves—>Radio Waves D)‘Rad-ie-Wa¥es—>X—rays—>Ultraviolet Radiation—>Visible Light—>Infrared Radiation —>Microwaves—>Gamma Rays E) Visibie—L-i-ghtfilnfrared Radiation—>Microwaves—>Radio Waves—>Gamma Rays—>X—rays —>U1traviolet Radiation 7) 8) 9) 10) 11) 12) many subshells are there in the n = 2 principal shell? 12) 2 n) 3 n ) L w ‘ 0‘4 < 3 € C) 1 ) D) 4 E) not enough information 13) Which color of the Visible spectrum has hortest wavelength (400 nm)? 13) A) yellow B) green let D) red E) orange 14) Which form of electromagnetic radiation has photons With the lowest energy? 14) A) X—rays B) Infrared Radiation /- Microwaves m dio Waves : Gamma Rays 15) What is the correct Lewis structure for N2? 15) ' A)=1§1-1\I‘ N7. (1k 5“) _ [0e Avalécéflq szlfi gxgficlc’e‘cpvv 0664 GEM ”0“”: 5%: :3 AWQA D) N—N E)noneoftheabove LOQAQWZaéL ~(g (1.446101 Am 6. : éAé—QA (j 16) — 16) Which one of the following species has the electron configuration of 1522522p5? UV 1. Na+ 2. ,02- If: 3. F— A)2and3onlyM B) 1 and 2 only 1 and3only @Aflof 1, 2, and3 . E) Neither 1, 2, or 3 17) Which one of the following is the correct orbital diagram for nitrogen? A)Tl N T T T B)Tl Tl l T T Ti H T T T wt TT T T T . none of the above 17) 18) What is the molecular geometry if you have 4 single bonds around the central atom? 18) linear @etrahedral trigonal pyramidal m D) bent C2 ~_ #26 E) not enough information I 7/21 MM 19) The electron geometry and the molecular geometry of ammonia (NH3) are, respectively 19) A) trigonal planar, bent no B) tetrahedral, bent , “ WLQW 9,— 1M tetrahedral, tetrahedral < .(f N ‘\ +V7' J ? ) ®r -trahedral, trigonal pyramidal \ , I ' ' ’/’ / W 0) 7m Mk. \ / none of the above 20) "When filling orbitals of equal energy, electrons fill them singly first with parallel spins." This 20) is known as: A) Bohr's model Pauli exclusion principle und' 5 rule Ground state E) none of the above Answer Key Testname: 1027 SPRING 2011 EXAM 4 ”Tr Om. 1) B 2) E 3) D 4) B 5) B 6) C 7) D 8) D 9) A 10) D 11) B 12) A 13) C 14) D 15) C 16) D 17) D 18) B 19) D 20) C ...
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