Dentify the reagents used to carry out the chlorination of benzene. a. cl2/ccl4 b. cl2/fecl3 c. cl2/nacl d. both b and c e. a, b
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What is the specific heat of a substance whose mass is 7 grams, if it absorbs 180 calories to go from 10 degrees Celsius to 85 degrees Celsius
Answer:
0.343cal/g°C
Explanation:
Given parameters:
Mass of substance = 7g
Quantity of heat absorbed = 180calories
Initial temperature = 10°C
Final temperature = 85°C
Unknown:
Specific heat of the substance = ?
Solution:
To solve this problem, the specific heat of a substance is the amount of heat needed to raise the temperature of a unit mass of that substance by 1°C.
Mathematically;
C =
C is the specific heat
Q is the amount of heat
m is the mass
T is the temperature
1 and 2 are the initial and final states
Now, insert the parameters and solve;
C = = 0.343cal/g°C