2 years ago

1 pt

1 answer:

4 0

Ghbghvdezagnlmhhbbb

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8_murik_8 [283]

Mg(OH)2 +2HCl---> MgCl2+2H2O

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Dmitry [639]

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Carbon dioxide and water are turned into sugar and oxygen

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weqwewe [10]

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What is the question? It looks like a fact.

Explanation:

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3 years ago

Digiron [165]

Answer: $=176.6kJmol^{-1}$

Explanation:Bond energy of H-H is 436.4 kJ/mole

Bond energy of C-H is 414 kJ/mol

Bond energy of C=C is 620 kJ/mol

Bond energy of C≡C is 835 kJ/mol

$\Delta H= {\text {sum of bond energies of reactants}}- {\text {sum of bond energies of products}}$

$\Delta H$ = {1B.E(C≡C)+2B.E(C-H) +1B.E(H-H)} - {1B.E(C=C)+4B.E(C-H)}

$\Delta H= {1B.E(835kJmole^{-1})+2B.E(414kJmole^{-1}) +1B.E(436.4kJmole^{-1})} - {1B.E(620kJmole^{-1})+4B.E(414kjmole^{-1})}$

$=176.6kJmol^{-1}$

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3 years ago

nikdorinn [45]

Add an alkaline compound to raise the pH to 7.2.

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2 years ago