General Chemistry 1 (CHEM1141) Shawnee State University Fall 2016

Transcription

1 Geeral Chemistry 1 (CHEM1141) Shawee State Uiversity Fall 2016 September 23, 2016 Name E x a m # I C Please write yur full ame, ad the exam versi (IC) that yu have the scatr sheet! Please 0 check the bx ext t yur crrect secti umber. Secti #: l. (Mday Lab, 11:00 AM - 1:50 PM) 2. (Wedesday Lab, 11:00 AM - 1:50 PM) 3. (Tuesday Lab, 3:30 PM - 6:20 PM) 4. (Thursday Lab, 3:30 PM - 6:20 PM) 5. (Wedesday Lab, 2:00 PM - 4:50 PM) Multiple Chice: Qll: /30 /lo Q12: / l O Q13: Q14: Q15: Q16: Q17: BONUS: _ /3 TOTAL:

2 Each prblem i this secti (multiple chice) is wrth 3 pits! Ql. I e f the first lab experimets this semester yu determied the mass f yur graduated cylider ctaiig water three times. Oe CHEM 1141 studet btaied the fllwig masses: g, g, ad g. This studets are certaily. ^c:; -clw Idcj^Iw A) accurate (^B) precise^^ C) accurate ad precise abttj" ^CCw^fa / tttdvj 'f/^ yjalf D) accurate but t precise E) either accurate r precise 02. Which f the fllwie represets the smallest vlume f water? l'6y'v l (g>. 5 X 10"'kL D) 1.5 X iq^l ^ O ' l ^ U ' O t s L O-OOOIIL.4c..iU!^ 3 = O\5Lc^.0.<C QI.SxIQ-^L B) 15 cm E) 1.5 X 10^L l-^t. [ Sri'^^jCL\ (^ 1 - i.'=;xfo^'^l Q3. Read the vlume f water ctaied i the 100 ml graduated cylider shw belw t the crrect umber f sigificat figures. 10' y \ = ( - ^ L (-<ai 2L, 2^ > \ j \ \ i V v s " ) L. 10 A ) m L B ) m L C ) m L m L E ) 2 5 m L

3 Q4. The desity f gld is This is a example f 2i()\ A) chemical prperty B) physical prperty C) itesive prperty D) extesive prperty ^^E^bth B ad C 8 Q5. A cmmaiy^-flerig istpe f ti is ti-118, while mst xyge ccurs i ature as xyge-c^ A frmula uit f ti(iv) xide frmed frm these istpes wuld ctai hw m a y e u t r s? 0 ^ ~ " A) 66 O ) 8 ^ C) 76 D) 134 E) 150 Sv, 68 ' Q6. Hw may sigificat figures are i the measuremet x 10'* kg ctai. A ) 1 B) 2 C) 3 E)5 Q7. Which f the fllwig symbls represet istpes f the same elemet? 1) A) 1 ad 2 ' ' X ^ 2 ) l l X 3 ) ''f B) )1 ad 3 C) 1 ad 4 D) 3 ad 4 E) 1, 2, ad 3 4) Q8. The Rutherfrd gld-fil scatterig experimet prvided evidece fr; A) the existece f istpes B) the electr clud abut the atm C), the uclear mdel f the atm D) the law f multiple prprtis E) the mass t charge rati f the electr MOf NJi^r s"^' Q9. The frmulas fr itrate, itrite, ad sulfide is are represeted, respectively, as: A) NO4", NO3", s/- B) NO3- S'- C) NO2- NO3- SO3'" D) N^", NO'-, SO3'- NO3- NOj- S'-

4 QIO. A prspectr fud a grey clred metal ugget ad wats t see if it is valuable. Yur suggesti is t determie the desity by btaiig the mass ad vlume f the ugget. The mass f the ugget was btaied by differece as fllws; weigh pa + ugget = g ^ > a e m p t y w e i g h p a g Sice this ugget is a irregularly shaped bject, the vlume f the ugget was determied by placig it i a graduated cylider ctaiig water as fllws: graduated cylider + water + ugget = ml v ^ graduated cylider + water = 9.50 ml ^ The desity (ad idetity) f the ugget is: ^ ^ ^ 24- ^ 2.70 ^ (alumium) B) 7.87 ^ (ir) C) 11.4 ^ (lead) D ) ( s i l v e r ) m L E) 7.13 ^ (zic)

5 Each prblem i this secti (shrt aswer) is wrth 10 pits! All wrk must be shw i rder t receive credit! Yu must use the factr-label (cversi-factr) methd fr all cversis! Be sure t iclude uits where applicable! All umeric aswers must be ruded t the crrect umber f sigificat figures! Qll. Prvide the crrect ame fr each f the fllwig cmpuds: A) Li2S04 B) CUNO2 CppgrCi") C) BrjOg Lfi b^tsyviia^ r\6v\xi(j? D) Na3P04 4 H2O [ a E) CF4 Caciy(S^ i^c^jltaridp Kv/l F) NH4NO3 QjiMV^5YA(^(/lA G) H3PO4 (disslved i water) _ s CXCyC^ Q12. Cmplete the fllwig table: Istpe Symbl ( zx-^ 58 p 3+ -fircwn I Name if5v\6^ curi'xl Atmic Number (Z) 2,(0 Mass Number (A) 5 S 55 N u m b e r f P r t s \1 N u m b e r f E l e c t r s 23) 20 N u m b e r f N e u t r s 3 ^ > MOt {vvw 4l"p -) cur^^

6 Q13. A barrel f il as measured the il market is equal t U.S. barrels. A U.S. barrel is equal t 31.5 galls. If il is the market at $ 94.0 per barrel, what is the price i dllars per gall? ^ f t v - O ^ I '\.W 1-5 3U Q14. Prvide the crrect chemical frmula fr each f the fllwig cmpuds: A) ir(iii) sulfide. 2^ ^3 E) dibrmie heptachlride C) sdium phsphide D) magesium bicarbate E) ptassium chrmate C9 C C/Qy-f CrOv-i- Q15. Fill i the blaks: A) The ame f the grup IIA elemets the peridic table: Aibl 'AJL "R kutax? B) The ame f a elemet i the fifth perid the peridic table: ^ ' C) The ame f the grup VIA elemets the peridic table: NpUg/lrtg/'V GA</i D) The ame f a metallid the peridic table: ) E) The ame f a trasiti metal the peridic table:

7 Q16. Cmplete the fllwig calculatis ad rud yur aswers t the crrect umber f sigificat figures: A) Sai-88 B) SI* (3(3 ^ ' 'P 0-1^0 (If. 2a f C) dp D) k m X k m f 3.08 km E) x Ssi UrS, \ z-5k I" O S'={^'\ ("^4^ Q17. Mercury has a desity f m L What vlume i milliliters (ml) des g f 3 * mercury ccupy? Cvert this vlume it cubic iches (i ) give that 1 m = 2.54 cm. = > ( 6-2 < = 1 «L ( (la \ -. I 1 fc v 3 Pit Bus Questi A6< d> a666< Name all seve elemets that frm diatmic mlecules i their atural state* ^ A\Trtic^, fu Of JAJI civl'"0,t><w^, lji