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- M Inbox ( x Precalc X A HOLID X Oluwa X Good ь Chemi X A fake X G spiral G the sar X X Micros X https://papers.xtremepape.rs/CAIE/IGCSE/Chemistry%20(0620)/0620_s05_qp_6.pdf The same mass of zinc was used each time. The volume of acid used was different each time. Use the syringe diagrams to record the volume of hydrogen produced each time in the table. Table of results volume of sulphuric acid/cm volume of syringe diagram hydrogen/cm3 10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80 15 10 20 30 40 50 60 70 80 20 10 20 30 40 50 60 70 80 25 10 20 30 40 50 60 70 80 30 10 20 30 40 50 60 70 80 10 20 30 40 50 60 70 80 35 40 10 20 30 40 50 60 70 80 ENG 23:09 O Type here to search 27°C US 21/04/2022A compound contains only Mn and F. The ratio of Mn and F is 2.54 moles of F per 1 mole of Mn. If the empirical formula is expressed at Mnfx, what is the numerial value of x?it is also not 0.25
- What is the percent error? And how do I find it with the information provided.Just 7+2 Pb Thallium Lead 200.592 2818 32 182 1832 18 1 204.383 207.2 28 18 32 10 2818 32 18 3 111 112 +2 Mt Ds Hassium Meitnerium Darm (264] 32 32 122 2818 32 32 13 2 28 18 32 32 [269] 59 15. NaOH Ba(NO), (1)balanced eanation (10101lm介 10nice (6) Total mot ianic eanation (d)net lonic eqnoition
- 1. Explain both precision and accuracy as they pertain to chemical measurements. 2. Why would you use the method of standard addition to calibrate a measurement instead of a calibration curve?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.…What is the average ratio in this chart? Please show me the calculation too! Sample 1 2 3 Calculations for sample 1 Mass of aluminum dish 1.24g 1.26g 1.24g - Mass of aluminum dish + Epsom salt 1.70g 1.94g 1.80g - Epsom salt, original (hydrated) mass 0.46g 0.68g 0.56g 1.70g – 1.24g = 0.46g Mass of aluminum dish + Epsom salt after heating 1.42g 1.62g 1.61g Epsom salt, heated (dehydrated) mass 0.18g 0.36g 0.37g 1.42g- 1.24g = 0.18g Mass of water 0.28g 0.32g 0.19g 0.46g – 0.18g = 0.28g Moles of magnesium sulfate 0.0015mol 0.0030mol 0.0031mol 0.18g x (1mol/120.37g)= 0.0015mol Moles of water 0.016mol 0.018mol 0.011mol 0.28g x (1mol/18.02g) = 0.016mol Ratio of moles water: moles of magnesium sulfate 32:3 18:3 11:3.1 0.016 : 0.0015= 32:3 Average Ratio