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iris [78.8K]
3 years ago
15

I need help with this study island question thank u

Chemistry
1 answer:
Slav-nsk [51]3 years ago
7 0

Answer:

The answer would be C. The reason being they're in different groups on the periodic table, so different reactivity.

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If an endothermic reaction occurs in solution, the temperature of the solution will
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increase

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because in endothermic reaction heat is absorbed

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What chemical change is magnetizing steel
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Using the reaction below: 2 CO2(g) + 2 H2O(l) → C2H4(g) + 3 O2(g) ΔHrxn= +1411.1 kJ What would be the heat of reaction for this
maw [93]

Answer:  d) -705.55 kJ

Explanation:

Heat of reaction is the change of enthalpy during a chemical reaction with all substances in their standard states.

2CO_2(g)+2H_2O(l)\rightarrow C_2H_4(g)+3O_2(g) \Delta H=+1411.1kJ

Reversing the reaction, changes the sign of \Delta H

C_2H_4(g)+3O_2(g)\rightarrow 2CO_2(g)+2H_2O(l)

\Delta H=-1411.1kJ

On multiplying the reaction by \frac{1}{2} , enthalpy gets half:

0.5C_2H_4(g)+1.5O_2(g)\rightarrow CO_2(g)+H_2O(l)\Delta H=\frac{1}{2}\times -1411.1kJ=-705.55kJ/mol

Thus the enthalpy change for the given reaction is -705.55kJ

7 0
3 years ago
PLEASE HELP ILL GIVE BRAINLIEST
tino4ka555 [31]

Answer:

False

Explanation:

7 0
3 years ago
Read 2 more answers
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