1 H 1.008 3 4 Li Be 6,941 9,012 11 12 Na Mg 22.99 24.31 19...

Transcribed Image Text:

1 H 1.008 3 4 Li Be 6,941 9,012 11 12 Na Mg 22.99 24.31 19 20 21 K Ca Se 39.10 40,08 44.96 22 Ti 47.88 NA = 6.022 x 1023 mol-1 1 amu = 1.6605 x 10-24 g 1 cal = 4.184 J 5 6 BCN 10.81 12.01 14.01 16.00 23 24 27 28 29 30 25 26 V Cr Mn Fe Co Ni Cu Zn Ga 69.72 50.94 41 52.00 54.94 55.85 42 43 44 58.93 45 58.69 63.55 46 47 65.38 48 49 40 Zr Nb Mo Tc Ru Rh Pd Ag Cd In 1124 114.8 37 38 39 Rb Sr Y 85.47 87.62 88.91 55 56 57 Cs Ba La 132.9 137.3 138.9 178.5 180.9 183.9 186.2 190.2 192.2 195.1 197.0 200.6 204,4 207.2 209.0 (209) (210) (222) 87 89 91.22 92.91 72 73 Hf Ta W 95.94 74 (98) 101.1 102.9 75 76 77 Re Os Ir 106.4 78 107.9 79 Sb Te I 121.8 127.6 126.9 83 84 85 86 Pt Au Hg Tl Pb Bi Po At Rn 88 Fr Ra Ac (223) 226 (227) 9 10 20.18 18 F Ne 19.00 13 14 15 16 17 AI Si P S CI 26.98 28.09 30.97 32.07 35.45 31 32 33 34 35 Ar 39.95 Ge Se Br 72.59 As 74.92 50 51 78.96 79.90 Sn 118.7 7 c = 2.9979 x108 m/s 8 80 81 82 2 He 4.003 En = -2.179 x10-18 J (Z²/n²) 1 L atm = 101.3 J 36 Kr 83.80 52 53 54 Xe 131.3 h = 6.626 x 10-34 Js QUESTION 3 (32 MARKS) (a) Using PC)xample, show with dimensional analysis that the moms and molar mass of a substance are numerically equal but have diffus (b) The number of atoms of coxygen in a 0.01800-g sample of Og equal to the number of masculina 0.06085-g sample of CH Determin (c) An organic compound contains carbon, hydrogen and nitrogen only nitrogen. One molecule of this organic compound contains 7 hydrogen atoms atom. Determine the molecular formula of organic compound (d) Consider the complete combustion of Benczene (Cthe density of benene is 0.88 gi what volume in liters of benene will be required to produce 23x1 the following reaction? of heat according to 2 C+15 0(g) 12 COO-4278 (e) What are the names of following processes? HOU NaCO(S) 9 W Cl₂) NO M) W 1(0) 15.044% by mass of drogen 2000 NaCO( If MgSOHO) was heated strongly in this experiment, write a chemical equation which shows what happened in this process Name the process (3 1 H 1.008 3 4 Li Be 6,941 9,012 11 12 Na Mg 22.99 24.31 19 20 21 K Ca Se 39.10 40,08 44.96 22 Ti 47.88 NA = 6.022 x 1023 mol-1 1 amu = 1.6605 x 10-24 g 1 cal = 4.184 J 5 6 BCN 10.81 12.01 14.01 16.00 23 24 27 28 29 30 25 26 V Cr Mn Fe Co Ni Cu Zn Ga 69.72 50.94 41 52.00 54.94 55.85 42 43 44 58.93 45 58.69 63.55 46 47 65.38 48 49 40 Zr Nb Mo Tc Ru Rh Pd Ag Cd In 1124 114.8 37 38 39 Rb Sr Y 85.47 87.62 88.91 55 56 57 Cs Ba La 132.9 137.3 138.9 178.5 180.9 183.9 186.2 190.2 192.2 195.1 197.0 200.6 204,4 207.2 209.0 (209) (210) (222) 87 89 91.22 92.91 72 73 Hf Ta W 95.94 74 (98) 101.1 102.9 75 76 77 Re Os Ir 106.4 78 107.9 79 Sb Te I 121.8 127.6 126.9 83 84 85 86 Pt Au Hg Tl Pb Bi Po At Rn 88 Fr Ra Ac (223) 226 (227) 9 10 20.18 18 F Ne 19.00 13 14 15 16 17 AI Si P S CI 26.98 28.09 30.97 32.07 35.45 31 32 33 34 35 Ar 39.95 Ge Se Br 72.59 As 74.92 50 51 78.96 79.90 Sn 118.7 7 c = 2.9979 x108 m/s 8 80 81 82 2 He 4.003 En = -2.179 x10-18 J (Z²/n²) 1 L atm = 101.3 J 36 Kr 83.80 52 53 54 Xe 131.3 h = 6.626 x 10-34 Js QUESTION 3 (32 MARKS) (a) Using PC)xample, show with dimensional analysis that the moms and molar mass of a substance are numerically equal but have diffus (b) The number of atoms of coxygen in a 0.01800-g sample of Og equal to the number of masculina 0.06085-g sample of CH Determin (c) An organic compound contains carbon, hydrogen and nitrogen only nitrogen. One molecule of this organic compound contains 7 hydrogen atoms atom. Determine the molecular formula of organic compound (d) Consider the complete combustion of Benczene (Cthe density of benene is 0.88 gi what volume in liters of benene will be required to produce 23x1 the following reaction? of heat according to 2 C+15 0(g) 12 COO-4278 (e) What are the names of following processes? HOU NaCO(S) 9 W Cl₂) NO M) W 1(0) 15.044% by mass of drogen 2000 NaCO( If MgSOHO) was heated strongly in this experiment, write a chemical equation which shows what happened in this process Name the process (3

Answer rating: 100% (QA)

A Using dimensional analysis the molecular mass and molar mass of a substance are numerically equal but have different dimensions Molecular mass also ... View the full answer