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
patriot [66]
2 years ago
5

Calculate the total energy, in kilojoules, that is needed to turn a 46 g block

Chemistry
1 answer:
neonofarm [45]2 years ago
7 0

Answer: The total energy, in kilojoules, that is needed to turn a 46 g block of ice at -25 degrees C into water vapor at 100 degrees C is 11.787 kJ.

Explanation:

Given: Mass = 46 g

Initial temperature = -25^{o}C

Final temperature = 100^{o}C

Specific heat capacity of ice = 2.05 J/g^{o}C

Formula used to calculate the energy is as follows.

q = m \times C \times (T_{2} - T_{1})

where,

q = heat energy

m = mass

C = specific heat capacity

T_{1} = initial temperature

T_{2} = final temperature

Substitute the values into above formula as follows.

q = m \times C \times (T_{2} - T_{1})\\= 46 g \times 2.05 J/g^{o}C \times (100 - (-25))^{o}C\\= 11787.5 J (1 J = 0.001 kJ)\\= 11.787 kJ

Thus, we can conclude that the total energy, in kilojoules, that is needed to turn a 46 g block of ice at -25 degrees C into water vapor at 100 degrees C is 11.787 kJ.

You might be interested in
Is a theory testable, yes or no?
Paraphin [41]
Yes because a theory is based on results and the results are part of the experiment and it being tested. You have to test the experiment and get results so yes a theory is testable.
5 0
3 years ago
what is the primary function of the cells that make up the majority of cells in the muscular system ​
ANTONII [103]

Answer:

The muscular system is composed of specialized cells called muscle fibers. Their predominant function is contractibility. Muscles, attached to bones or internal organs and blood vessels, are responsible for movement. Nearly all movement in the body is the result of muscle contraction.

5 0
3 years ago
Which is not involved in a chemical reaction?
choli [55]

Answer:

division of atoms are neither created nor destroyed therefore atoms can only be rearranged

3 0
1 year ago
Which organelle would be best represented by a refrigerator because it stores food and water?
Luba_88 [7]
Qwesdfgudfdfdess de afefdfsfwrqdetgr
6 0
3 years ago
Help please need help need help need help for chemistry
Varvara68 [4.7K]
If you type in the letters (uppercase and lowercase matters) into google it will give you the answers
8 0
3 years ago
Other questions:
  • How many electrons does an atom have
    9·1 answer
  • A graduated cylinder( approximate as a regular cylinder) has a radius of 1. 045 cm and a high of 30.48 cm. what is the volume of
    9·1 answer
  • 1. Why is it that some combinations of ions do not seem to react while others result in precipitate? 2. For an insoluble compoun
    8·2 answers
  • A 36.41-g sample of calcium carbonate (CaC O 3 )
    15·1 answer
  • Table C: Known Specific Heat Values for Common Materials
    10·1 answer
  • If a sample of silver is reduced to the smallest possible particle of pure silver, which statement would most accurately describ
    12·1 answer
  • PLEASE HELP WITH MY CHEM ASSIGNMENT!!!
    6·1 answer
  • Order the structures from smallest to largest. Chloroplast Leaf Glucose molecule Cell Water molecule ​
    9·1 answer
  • Emperical formula for Al³⁺
    5·1 answer
  • Answer please i need it
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!