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]
3 years ago
5

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

Chemistry
1 answer:
neonofarm [45]3 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
When chemical, transport, or mechanical work is done by an organism, what happens to the heat generated?
dalvyx [7]

Explanation:

The heat generated when chemical, transport, or mechanical work is done by the organism is lost to the environment.

The the matter from one organism to the other is transferred via energy. The producer's produce and consumer's consume this energy according to 10% law. Most of the energy is lost (90% ) to the environment in form of heat.

5 0
3 years ago
Given the following information:
bonufazy [111]

Answer:

Ya'll should really practice more because things like these are easy

Explanation:

6 0
2 years ago
What is the mass of an atom that has 4 protons, 5 neutrons, and 4 electrons?
Mazyrski [523]
The answer would be 9
3 0
3 years ago
Read 2 more answers
Explain how you will seprate a mixture gari and sugar​
Karo-lina-s [1.5K]

Answer:

The sugar would dissolve in water. You could then pour off the solution and wash the remaining sand with a bit more water. Heat the water to evaporate it from the sugar, and the two are separated.

Explanation:

please mark me brainliest and follow me.

4 0
3 years ago
Water is unique because the density of it's solid is less than the density of it's liquid. Describe how life would be different
Andreas93 [3]

Ice caps would float therefore providing insulation for aquatic life and ensuring they do not freeze due to the cool temperature.

6 0
3 years ago
Other questions:
  • A gas has a pressure of 50.0 mmHG at a temperature of 540 K. What will be the temperature if the pressure goes down to 3 mmHg?
    13·2 answers
  • Methyl orange (HMO) is an acid-base indicator. Its two forms in solution are HMO (red) and MO- (yellow). When HMO is added to di
    10·1 answer
  • Which temperature most likely corresponds to the asthenosphere?
    8·2 answers
  • One mole of an ideal gas is sealed in a 22.4-L container at a pressure of 1 atm and a temperature of 273 K. The temperature is t
    7·1 answer
  • Which statement is always true about a reversible chemical reaction?
    10·1 answer
  • A gas at STP occupies 22.4 L if the temperature is changed to 260 K and the pressures changed it to 0.50 ATM what will the new v
    9·1 answer
  • Balance <br> Na2O+H2O → NaOH
    10·1 answer
  • Help please this is also science idk why brainly doesn't have that option
    14·2 answers
  • This is the chemical formula of Nitrogen gas.
    7·2 answers
  • 11) If you have a density of 100 kg/L,, tell me the following:
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!