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In-s [12.5K]
3 years ago
14

Which of the following is true during an exothermic reaction?

Chemistry
2 answers:
maks197457 [2]3 years ago
5 0
An exothermic reaction is a chemical reaction that releases energy by light or heat.
lara [203]3 years ago
3 0
The answer would be B: heat is released
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5 0
2 years ago
I have attached all the problems, but really if you just do one so I understand how to do it, that would be great!
Ivahew [28]

Answer:

Answer of question a is 345J.

Explanation:

In question a following is given in data:

-mass of iron (m) = 10.0 g

-temperature (ΔT) = final temperature- initial temperature= 100-25=  75 degree Celsius

-Specific Heat capacity of iron (c)= 0.46J/g°C.

Heat (Q)=?

Solution:

Formula for Heat is :

Q=m x c x ΔT

Q= 10 x 0.46 x 75

Q= 345 J.  

so, 345 joules of heat is needed to increase the temperature of 10 grams of iron.

  • From the above formula all other questions can easily be solved from the same procedure.
4 0
3 years ago
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