Apply Hess' Law to the chemical reactions in question 2 above: Arrange equations A-C so that when they are added together, they add up to the combustion of magnesium metal to form magnesium oxide, equation D. а. Equation A: mgss +2HCI caa) → mg Clz (aa) + H2(g) Equation B: mgOis)+2HCI (aq). → mgc1 zca9) +HzO(i) Equation C: 2 f) +$0219) H2O () Equation D: b. Write an equation, using variables and not numbers, showing how the AH values for equations A-C can be combined to equal the AH value for the combustion of magnesium metal.

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Apply Hess' Law to the chemical reactions in question 2 above:
a. Arrange equations A-C so that when they are added together, they add up to the
combustion of magnesium metal to form magnesium oxide, equation D.
Equation A: Mgs+aHCl caa) mg Cl2 (a9) H2cg)
Equation B: MgOIs)+2HCI Laa)→ mgc1 zca9)+HzO()
Equation C: 2 f)+$029) H2O ()
Equation D:
b. Write an equation, using variables and not numbers, showing how the AH values
for equations A-C can be combined to equal the AH value for the combustion of
magnesium metal.
rgero beonsled
Transcribed Image Text:Apply Hess' Law to the chemical reactions in question 2 above: a. Arrange equations A-C so that when they are added together, they add up to the combustion of magnesium metal to form magnesium oxide, equation D. Equation A: Mgs+aHCl caa) mg Cl2 (a9) H2cg) Equation B: MgOIs)+2HCI Laa)→ mgc1 zca9)+HzO() Equation C: 2 f)+$029) H2O () Equation D: b. Write an equation, using variables and not numbers, showing how the AH values for equations A-C can be combined to equal the AH value for the combustion of magnesium metal. rgero beonsled
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