Carbon tetrachloride, CCl4, was a popular organic solvent until it was discovered to cause cancer. How much energy in kilocalories is required to heat 0.14

Question

required to heat 0.14 pounds of CCl4 from 25.6 oC to 72.9 oC. ( S= 0.857 J/goC)

Answer 1

Q = mcΔT

 

m = mass of CCl₄  (convert lbs. to kg or g)

c = specific heat of CCl₄  (look it up in appropriate units)

ΔT = (72.9 - 25.6)°C

 

Plug in the numbers in compatible units and get Q.

 

(By the way, the vapors of CCl₄ are also  extremely toxic, which is too bad, because it is a great fire extinguishing chemical.)