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
kirza4 [7]
4 years ago
14

How much energy does it take to convert .500 kg of ice at -20°C to steam at 250°C.

Chemistry
1 answer:
Shkiper50 [21]4 years ago
3 0
Use the specific heat equation for each one:

Q = mCT

m is mass
T is change in temp
C is spec heat

You will not only have to calculate three different specific heats, but also do the heat of vaporization and heat of fusion.

Heat of vaporization is 3.33 * 10^5 J/Kg

Heat of Fusion is 2.26 * 10^6 J/Kg

You’ll want to make sure all your units match. So change all Kg to g (or g to Kg)


-20 to 0 = mC(Ice)T

Melt ice (fusion) = m(heat of fusion)

0 to 100 = mC(Water)T

Boil (Vaporization) = m(heat of vaporization)

100 to 250 = mC(Steam)T


Then add each one together
You might be interested in
Does anybody know this ?
geniusboy [140]

Explanation:

density =mass/volume

density = 603/281

density = 2.1459 g/cm³

3 0
3 years ago
All human body systems works together m. What would happen to someone if one of their systems becomes inefficient?
Reil [10]
They would most likely get sick. Or suffer from organ failure. When one part of your body doesn’t work it causes a weakness, making you more susceptible to sicknesses.
4 0
3 years ago
Read 2 more answers
When most liquids freeze, explain what happens to the motion and the space between the atoms.
KiRa [710]

Answer:

atoms relative motion slow down and begin to vibrate in place

8 0
3 years ago
The reaction of an alkene and water in the presence of an acid catalyst to produce an alcohol is called ________.
pochemuha
The answer I believe is Hydration
5 0
3 years ago
Lily is doing a science experiment with a substance in a sealed jar. At first, the substance's molecules are moving around each
Alex

The molecules will be more separated, and will have least amount of intermolecular force of attraction.

<h3><u>Explanation:</u></h3>

The molecules inside the jar of Lilly are moving around each other. This means the state of the matter present inside the jar is liquid. As Lily gives more energy inside the jar , the molecules inside the jar will get more separated as the kinetic energy of the molecules increase and the intermolecular force of attraction decreases as well as the intermolecular separation or distance increase. As the energy is continued to be supplied from outside, there will be a time when this liquid will reaches boiling point and will start to change into gas. After this point the intermolecular force of attraction will be least among molecules and their separation will be maximum.

6 0
4 years ago
Other questions:
  • Select the reagent that will separate the pairs of ions listed.
    6·1 answer
  • Even though we are well into the course Dumbledore notices some of the students are still having trouble with significant figure
    9·1 answer
  • Information that tells why or how something happens is (a):
    8·2 answers
  • Determine the energy of a photon whose frequency is 1.59x10^17 Hz.
    14·1 answer
  • In the reaction H2SO4 + 2 NaOH -&gt; Na2SO4 + 2H2O, an equivalence point occurs when 23.1 mL of 0.2055 M NaOH is added to a 25.0
    10·1 answer
  • A sample of sulfur hexafluoride gas occupies a volume of 9.10 L at 198ÁC. Assuming that the pressure remains constant, what temp
    6·2 answers
  • The equilibrium concentrations were found to be [br2] = 2.2 × 10−3 m, [cl2] = 3.0 × 10−2 m, and [brcl] = 1.5 × 10−2 m. write the
    10·1 answer
  • Could someone help me with this? No links, will give brainliest.
    9·1 answer
  • Are elements matter and why?
    13·1 answer
  • What is the density of an object with a mass of 53.7 g and a volume of 27.19 ml?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!