Unknown # Unknown Sample # Unknown Sample # Unknown Sample # 67 A 67 B _67 C_ 10.5246 10.5103 10.5369 Dried crucible, mass, g 12.6158 12.7061 12.6245 Crucible + mass unknown, g 2.0912 2.1958 2.0876 Mass of unknown, g Crucible + unknown after 12.4475 12.5295 12.4589 1st heating for 10 minutes over lit Bunsen burner, g 12.4474 12.4585 |Crucible + unknown after | 2nd heating for 10 minutes over lit Bunsen 12.5298 burner, g Mass Lost after heating, g (Amount of CO; loss) *Mass of CUCO3, g *% of CUCO3 in sample *% of CUCO3, average *% error to Theoretical Theoretical % CuCO3 is 22.75%

Unknown # Unknown Sample # Unknown Sample # Unknown Sample # 67 A 67 B _67 C_ 10.5246 10.5103 10.5369 Dried crucible, mass, g 12.6158 12.7061 12.6245 Crucible + mass unknown, g 2.0912 2.1958 2.0876 Mass of unknown, g Crucible + unknown after 12.4475 12.5295 12.4589 1st heating for 10 minutes over lit Bunsen burner, g 12.4474 12.4585 |Crucible + unknown after | 2nd heating for 10 minutes over lit Bunsen 12.5298 burner, g Mass Lost after heating, g (Amount of CO; loss) Mass of CUCO3, g % of CUCO3 in sample % of CUCO3, average % error to Theoretical Theoretical % CuCO3 is 22.75%

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

18E(S) + SHOCAL) → 2 EeU₂(3) + 3H₂(g) FeU2(s) ○ 4.525€ > 0 0 4,5%, 0120 O A, S., 0 40 Q Search ******* ******* D ******* ****** ****** 24 $1
7. In weighing by difference: Initial weight of the sample bottle containing the sample:10.0001g.Final weight of the sample bottle containing thesample:__g.Weight of the sample taken from the bottle is 6.0200 g a 3.8901 b 3.9801 c 16.0201 d 16.020
1E. C8H12O2 4.0 B L 3000 3.0 100 2000 88 4 2.0 88 1000 1.8 83 4. 8.0
1Mg + 1H2SO4 1MgSO4 + ___H22. 3Fe + ___O2 1Fe3O43. 2Pb(NO3)2  2PbO + ___NO2 + 1O24. ___C2H6 + 7O2 4CO2 + 6H2O5. 2BaO2 ___BaO + 1O26. 1MnO2 + 4HCl1MnCl2 + ___H2O + 1Cl27. 2C3H6 + 9O2 ___CO2 + 6H2O8. 2KMnO4 + ___HCl2KCl + 2MnCl2 + 4H2O + 1Cl2
IA VIIIA 4.003 1.008 VIA VILA He 10.81 12011 14.007 15999 18.998 20.179 MA IVA VA 6.941 9.012 u „Be „B .C N ,0 F Ne 22.990 24 305 „Na „Mg ma VB 26.98 28.09 30.974 32.06 35 453 39948 m Al „Si 1sP S „CI „Ar 39 098 40.08 4496 47 88 50.94 52.00 54.94 5.85 58.93 58 89 63.546 65. 38 69.72 7259 7492 78.96 79.904 8380 „KCaSc zTI V „CrMnFe „Co Ni „CuZn „Ga„Ge As Se „Br Kr 101.1 102 91 106.4 107 87 112 41 114.82 118.69 121.75 127 60 126 90 13129 „Rb „Sr „Y Zr „Nb MoTc„RuRh Pd Ag.cd In „Sn Sb Te l Xe VIIIB VB VIB VIB 21 85.47 87.62 88.91 9122 291 9594 50° 52 132 91 137 33 138.91 178.49 18095 183.85 186 2 190 2 1922 195.08 196.97 200 59 204 38 2072 208 98 44) 210) e22) „CsBa „La zHf „Ta „W „Re„Os ir „Pt Au Hg I Pb Bi „PoAtRn 023) 226 03 227.03 „Fr Ra „Ac 72 73 140. 12 140.908 144 24 (145) 150 36 15196 157 25 158.93 162 50 164.93 167 26 168 93 173 04 17497 „Ce „Pr NdPm SmEu „Gd Tb „Dy „Ho Er „Tm„Yb „Lu G51) 232 04 231036238 03 237 05 Q4) 43) 247) 47) „Th „Pa U Np „PuAm.Cm „Bk Cf „EsFmMdNo Lr 054)…
Experiment 11: Decomposing Baking Soda 7. A student collects the following data when decomposing an unknown mixture containing baking soda, NaHCO3. Find the mass of baking soda in the sample and the % of baking soda in the sample. 2 NaHCO3 (s) → Na2CO3 (s) + H2CO3 (g) Mass of test tube + unknown mixture (before heating) 24.1612g Mass of test tube 23.1186 Mass of test tube + residue (after heating) 23.8910g a. Mass of unknown mixture: 0426a 124 b. Mass of H2CO3 (before heating - after heating): c. Mass of NaHCO3 in unknown mixture and percent of NaHCO3 in unknown
Examples Cl2 / CCI4 a. 33 Study Unit 7 Br2 / CC4 b.
59 Ce 57 58 62 63 64 60 Nd 61 Pm 65 Tb 66 Dy 68 69 67 Но La Pr Eu 138.91132.91 140.91132.91 (145) 150.36 151.97 157.25 158.93 162.50 164.93/167.26 168.93 Sm Gd Er Tm 90 92 93 Np 94 95 Am (227) 232.04231.04238.03 (237) | (244) (243) (237) | (247) (251) (252) (257) (258) 89 Ac 91 Pa 96 Cm 97 Bk 98 Cf 99 Es 100 Fm 101 Md Th U Pu Question 48 The PHIVOLCS recently reported that Taal volcano emitted 15,500 tons of Sulfur Dioxide (SO). How many atoms of Sulfur are there in 15,500 tons of SO,? edia Atomic Weights: S = 32.1 O = 16.0 1 ton = 1000 Kg = 1,000,000 g O 1.5 x 10 32 O 1.61 x 1032 O 1.46 x 1032 O 1.41 x 1032 • Previous pe here to search
What is the molar mass of unknown Z, .0578g and 1.12 x10 -3moles. 2$ 4 5 dele R Y F G H. K L
1.75 x 1025 selenium atoms contains ____ moles of selenium. Report your answer to 3 s.f.(hint: this is a dimensional analysis problem) _________
Determination of the amount of water, mass of crucible + dehydrated sample 16.2265g, mass of dehydrated Sample is 1.3031g, mass of water is 0.3587g, moles of water is 0.01991moles,DETERMINATION of the amount of copper, mass of copper 0.6291g, moles of copper 9.900 × 10 to the negative 3 moles, Determination of the amount of chlorine, calculate mass of copper + water.
H He 1.008 3 4.003 36 7 S 9 10 4 C Li Be 6.941 9.012 B F Ne 10.81 12.01 14.01 16.00 19.00 20.18 13 14 Al Si 26.98 28.09 30.97 32.07 35.45 39 95 15 16 17 S 11 12 18 Na Mg 22.99 24.31 Ar 26 27 28 Co 39.10 40.08 44.96 47.88 50.94 52.00 54.94 55.85 58.93 58.69 63.5s|65.38 69.72 72.59 74.92 78.96 79.90 83.80 22 23 24 25 Cr 19 20 21 29 30 31 32 33 34 35 36 K Ca Sc Ti Mn Fe Ni Cu Zn Ga Ge As Se Br Kr 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 |Y Zr Te ca In Sn Sb Te I Rb Sr Nb Мо Ru Rh Pd Ag Cd Xe 85.47 87.62 88.91 91.22 92.9195.94 (98) 101.1 102.9 106.4 107.9 112.4 114.8 118.7 121.8127.6 126.9 1313 55 56 57 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 Cs Ba Ва La Hf Ta Re Os Ir Pt Au Hg TI Pb Bi Po At Rn 132.9 137.3 138 9178.5 180.9 183.9 186.2 190.2 192.2 195.1 197.0 200.6 204.4 207.2 209.0 (209) (210) (222) 87 89 Fr Ra Ac (223) 226 (227) Calculate the pH of a 50.00 mL of 0.2000 M ammonia (Ka = 5.7 x 10-10) solution after addition of 50.00 mL of 0.2000 M HCl in the titration. 1.…