1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
igor_vitrenko [27]
3 years ago
13

How much heat is released when 27.6 g P C l subscript 3 cools from 83.1 °C to 55.6 °C? (The specific heat of P C l subscript 3 i

s 0.874 J/g °C).
Chemistry
1 answer:
Paul [167]3 years ago
7 0

Answer: Thus 663 J of heat  is released when 27.6 g PCl_3 cools from 83.1 °C to 55.6 °C

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

Q=m\times c\times \Delta T

Q = Heat released = ?

m = mass of substance = 27.6 g

C = specific heat capacity = 0.874J/g^0C

Initial temperature= T_i = 83.1^0C

Final temperature  = T_f  = 55.6^0c

Change in temperature ,\Delta T=T_f-T_i=(55.6-83.1)^0C=-27.5^0C

Putting in the values, we get:

Q=27.6g\times 0.874J/g^0C\times -27.5^0C=-663J

As the value of q is negative, it means the heat has been released and it is 663J

You might be interested in
Picture below<br><br> need done by 2:30<br><br><br><br> thanks, God bless your week
Leviafan [203]

1. \sf \bf {\boxed {\mathbb {Evaporation}}} - The changing of liquid to a gas.

2. \sf \bf {\boxed {\mathbb {Automobile}}} - The major source of pollution.

3. \sf \bf {\boxed {\mathbb {Greenhouse \:effect}}} - Carbon dioxide and water vapor trapping heat given off by Earth.

4. \sf \bf {\boxed {\mathbb {Ozonosphere}}} - Layer absorbing ultraviolet rays.

5. \sf \bf {\boxed {\mathbb {Condensation}}} - The changing of a gas to a liquid.

6. \sf \bf {\boxed {\mathbb {Ionosphere}}} - Layer responsible for reflecting radio waves.

7. \sf \bf {\boxed {\mathbb {Troposphere}}} - The layer in which weather changes.

\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{❦}}}}}

5 0
3 years ago
Read 2 more answers
Find the density of a cube on Earth that weighs 1.5 kg and has a side-length of 10 cm.
tamaranim1 [39]

Answer:

1500kg/m^3

Explanation:

Formula:

d=m/v

Given:

m=1.5kg

v=1000cm^3

(The side length of a cube is always equal to the others)

Required:

d=?

Solution:

d=m/v

d=1.5kg/1000cm^3

d=1.5kg/0.001m^3

d=1500kg/m^3

Hope this helps ;) ❤❤❤

3 0
4 years ago
Đốt cháy hết 9g kim loại magie Mg trong không khí tích tụ được 15g hợp chất magie oxit MgO. Biết rằng magie cháy là xảy ra phản
vfiekz [6]

Answer:

jijji[ojooooooooooooooooooooooooo

Explanation:

kjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj

5 0
3 years ago
A manufacturing plan has been found guilty of polluting the nearby river. this is pollution
solniwko [45]
Yes it is polluting the river with everything the manufaturing plant gives off such as the chemicals released in the air
6 0
3 years ago
Which compound, in the liquid phase, conducts electricity best?
Reptile [31]

Answer:

The answer is salt

Explanation:

I got it right on the quiz

5 0
3 years ago
Other questions:
  • I really need the answers please!
    10·1 answer
  • Which of the following is a synthetic organic material?
    7·2 answers
  • What domain is an onion
    9·2 answers
  • How many gases are there that are not noble gases
    11·1 answer
  • Describe two ways that climate change can degrade soil in 3-4 sentences.
    7·1 answer
  • The heat of vaporization of an unknown liquid is 1,340 Joules per gram. What is the minimum number of Joules needed to change 20
    9·1 answer
  • how many grams of sodium hydroxide are required to dissolve in 232 g of water to make a 2.88 m solution
    12·1 answer
  • Ano ang scientific method​
    6·1 answer
  • A Question 2 (2 points) Retake question
    6·1 answer
  • Please solve ...................................................................
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!