3 years ago

I need help with this study island question thank u

1 answer:

7 0

Answer:

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

You might be interested in

Ahat [919]

Answer:

increase

Explanation:

because in endothermic reaction heat is absorbed

4 0

3 years ago

Gnoma [55]

The third one you have listed

4 0

3 years ago

labwork [276]

Magnetizing steel is a physical change, not a chemical change.

4 0

3 years ago

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

tino4ka555 [31]

Answer:

False

Explanation:

7 0

3 years ago