spicymery spicymery
  • 03-03-2020
  • Chemistry
contestada

How much heat is released when a 20g block of lead cools from 150°C to 120°C

How much heat is released when a 20g block of lead cools from 150C to 120C class=

Respuesta :

kinyonethan1
kinyonethan1 kinyonethan1
  • 03-03-2020

Answer:

96 Joules of heat released.

Explanation:

q=mc∆t

q=(20)(.16)(-30)

q=-96

Q negative means heat is released.

Answer Link

Otras preguntas

Help pls 10 pts. Drastic boundary changes can occur for all of the following reasons except for __________. A. a shift in the way a river flows B. the collapse
What is the function of the following organelles? Nucleus Cell membrane Plasma membrane Mitochondria Vacuole Endoplasmic reticulum Cell wall Chloroplasts Ribos
Can I please get help
what were some important places in the oregon territory?
maya used a drwaing to divide 86 she made groups of 17 with 1 left over. Draw a picture to determine how many groups may made.
the derek and the dominos recording of the song layla featured the playing of which famous blues-rock guitarist?
what purpose did the british set up a colony in 1738
Factor (x^2-9) (x^2-16)
Tabcorp provides wagering products via internet, mobile devices and phone? True False
In the engineering design and prototyping process, what is the advantage of drawings and symbols over written descriptions?