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Lab 6 Data Table - -285.8-639-602 Rel.error accuracy 6.14...

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21:03:18 01/23/2012 Name: Liz Zharovsky Bench: C19 Lab day: Tuesday Date: 11/1/2011 Partner: Siqi Liu Lab section: 2 TABLE OF DATA AND RESULTS Heat of  Mg(s) + HCl(aq) reaction 1 2 3 Wt. of Mg (g) 0.1985 0.2095 0.2437 moles of Mg 0.008165 0.008618 0.01002 30.29 30.44 31.90 24.31 21.73 21.54 21.88 8.56 8.90 10.02 -491 -483 -468 -481 -461.9 11.7 Rel. error - accuracy (%): 4.14 Rel.error - precision (%): -2.43 Heat of  MgO(s) + HCl(aq) reaction 1 2 3 Wt. of MgO (g) 0.6284 0.6145 0.6213 moles of MgO 0.01559 0.01524 0.01541 26.39 26.29 26.22 40.31 22.34 22.00 21.98 4.05 4.29 4.24 -122 -132 -129 -128 -145.9 5.13 Rel. error - accuracy (%): 12.3 Rel.error - precision (%): -4.01 Heat of  formation  of  MgO(s)
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Unformatted text preview: -285.8-639-602 Rel.error - accuracy (%): 6.14 Atomic mass of Mg (g/mol): T f ( o C) T i ( o C) Average ∆H o rx (kJ/mol): T f - T i ( o C) ∆H o rx (kJ/mol) True ∆H o rx (kJ/mol Mg): St.deviation ∆H o rx : Molar mass of MgO (g/mol): T f ( o C) T i ( o C) Average ∆H o rx (kJ/mol): T f - T i ( o C) ∆H o rx (kJ/mol) True ∆H o rx (kJ/mol MgO): St.deviation ∆H o rx : ∆H o f (H 2 O, l) (kJ/mol): ∆H o f (MgO,s) (kJ/mol): True ∆H o f (MgO,s) (kJ/mol):...
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