Answer:
The correct answer is "5217 Cal".
Explanation:
The given values are:
Specific heat,
c = 3.76 cal/g°C
Mass,
m = 25.0 g
Initial temperature,
T₁ = 21.5°C
Final temperature,
T₂ = 77.0°C
Now,
The heat energy will be:
⇒ 
On substituting the given values, we get
⇒ 
⇒ 
⇒ 
A substance that influences the reaction but does not participate in the reaction is called a catalyst. In other words, it <span>increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
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