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
adoni [48]
3 years ago
7

How much energy is released when 2.25kg of water cools from 99.5°C to 4.2°C? 1000g=1kg; 1000J=1kJ; specific heat of water 4.184J

/g°C. q=mc∆T
Chemistry
1 answer:
vfiekz [6]3 years ago
8 0

Answer:

897154.2 J

Explanation:

Applying,

q = mcΔT.............. Equation 1

Where q = amount of energy released, m = mass of water, c = specific heat capacity of water, ΔT = Change in temperature

From the question,

Given: m = 2.25 kg = 2250 g, c = 4.184 J/g°C, ΔT = (4.2-99.5) = -95.3°C

Substitute these values into equation 1

q = 2250(4.184)(-95.3)

q = -897154.2 J

q =

Hence the amount of heat released is 897154.2 J

You might be interested in
The element iodine forms a(n) _______ with the charge . The symbol for this ion is , and the name is . The number of electrons i
-BARSIC- [3]

Answer:

The element iodine forms an anion with the charge -1. The symbol for this ion is I⁻¹, and the name is iodide. The number of electrons in this ion is 7.

Explanation:

Hello,

In this case, we have to consider iodine has the capacity to accept the electrons lost by other elements such as metals or hydrogen by becoming negatively charged. Such phenomena makes iodine to form an anion (negatively charged) with the charge -1, since it only needs one electron to attain the octet. Moreover, the symbol of such ion is I⁻¹ and its name is iodide. By cause of the aforementioned, the number of electrons it has is 7 since at its outer shell seven electrons are found (see electron configuration Kr,5s²,5p⁵).

Best regards.

7 0
3 years ago
An iron smoothing out the wrinkles in pants ? CONVECTION,RADIATION,CONDUCTION?
nexus9112 [7]

Answer:

Conduction i think-

3 0
3 years ago
Read 2 more answers
How many molecules of oxygen can be made from 9.52g of nickel (III) oxide?
snow_tiger [21]

Answer:

165.385 g/mol

6 0
2 years ago
When the same or different atoms combine together, you have a:
Alex73 [517]

Answer:

D.) molecule

<h3>When the same or different atoms combine together they for a molecule</h3>

3 0
3 years ago
Can you guys help me I really need help ! Just started this 6th grade I really need help I’m use to this
NeX [460]

Answer:

Mechanical - Freezing & Thawing, Acid Rain, Flowing Water, oxidation

Chemical - Rusting, abrasion

Explanation:

hope this helps!

5 0
3 years ago
Other questions:
  • What chemical compound provides energy for cells?​
    8·2 answers
  • How far does Outerspace go? What does it smell like?
    5·2 answers
  • Elements are organized in a chart called what?<br><br><br><br> Pls help
    14·2 answers
  • What was one main point of daltons atomic theory
    7·1 answer
  • Atoms are the particles that all matter is made from.
    7·1 answer
  • Why is the layer of fat on top
    10·1 answer
  • Answer 1-5 of lesson outline for brainiest
    6·2 answers
  • Explain what a convection current is? <br> who ever sees this I hope you have a wonderful day!
    11·1 answer
  • Region where electrons are located within an atom, what is it??
    10·1 answer
  • Why do ice cubes float to the top of a glass of water.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!