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

Define each of the following branches of chemistry. Pick one branch and answer the questions in the assignment guidelines. Analytical chemistry             Bio
-10, 200%, -1.3725, -0.5, 5/16 ordered least to greatest
HELP I NEED THIS DONE
A projectline is shot from the edge of a cliff 100 m above the ground with intial speed 10 m/s at an angle 30 with the horizontal. 1) determine the time taken
Write 7.9 x 10^-2 standard notation.7,900790.79.079
what skill is a scientist using when she listens to sounds that a whale makes?A.Making a hypothesisB. Interpreting dataC. Drawing conclusionsD. Making observati
Are 8 and 10 relatively prime?
Which of the following examples has three beats in each measure?
As an apple falls from a tree, which types of energy are changing?
A truck is going 30 m/s when the driver applies the brakes for 4.7 s so that the truck slows down to 20 m/s. a) What is the acceleration of the truck? b) How fa