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296. Calculate ΔHº298 the formation of MgCO3 (k) at 298 K, using the following data:
C (graphite) + O2 (g) = CO2 (g); ΔHº298 = -393.5 kJ
2Mg (к.) + O2 = 2MgO (к.); ΔHº298 = -1203.6 kJ
MgO (k) + CO2 (g) = MgCO3 (q); ΔHº298 = -117.7 kJ
C (graphite) + O2 (g) = CO2 (g); ΔHº298 = -393.5 kJ
2Mg (к.) + O2 = 2MgO (к.); ΔHº298 = -1203.6 kJ
MgO (k) + CO2 (g) = MgCO3 (q); ΔHº298 = -117.7 kJ
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Cumulative discount
| 200 $ | the discount is 15% |
| 100 $ | the discount is 10% |
| 50 $ | the discount is 7% |
| 20 $ | the discount is 5% |
| 10 $ | the discount is 3% |
| 5 $ | the discount is 2% |
| 1 $ | the discount is 1% |
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