Seudónimo Seudónimo
  • 12-10-2020
  • Chemistry
contestada

How much heat is released as the temperature of 465 g of water drops from 75.0°C to 18.2°C?

Respuesta :

ardni313
ardni313 ardni313
  • 13-10-2020

The heat released : -110560.632 J

Further explanation

Heat can be calculated using the formula:  

Q = mc∆T  

Q = heat, J  

m = mass, g  

c = specific heat, joules / g ° C  

∆T = temperature difference, ° C / K  

Known

m =465 g

c water = 4.186 J/gram °C

∆T = temperature difference = 18.2 - 75 = - 56.8 °C

Then the heat :

[tex]\tt Q=m.c.\Delta T\\\\Q=465\times 4.186\times -56.8\\\\Q=\boxed{\bold{-110560.632~J}}\rightarrow -=exothermic[/tex]

Answer Link

Otras preguntas

Paul's family drove 377 miles to the beach averaging 58 mi/h on the way there. On the return trip home, they averaged 65 mi/h. What was the total time Paul's f
What do you call a plant that does not have a woody stem?
What could you do to change the volume of a gas?
Geometry One side of a rectangle is 5 inches long. Another side of the rectangle is 7 inches long. What are the lengths of the other 2 sides of the rectangle?
What is the penalty for defying Creon's decree?
Which three presidents (1850–1860) are considered to be among the worst in American history?
Do you think it media plays too much of a role in public opinion? Why or why not?
What is one job of RNA? A. unraveling DNA B. manufacturing nucleotides C. carrying genetic information D. giving shape to chromosomes
Which answer choice lists the events of World War II in correct chronological order?
What are the geographic regions of West Africa?