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
saveliy_v [14]
4 years ago
7

Electrical energy is used to turn the blades of a fan. The amount of energy transformed is seen here: 750 J electrical energy is

transformed into 400 J kinetic or mechanical energy. What happened to the remaining 350 J of energy? A) It was lost due to friction. B) It was transformed into 350 J of heat energy. C) It was destroyed by the rotating blades of the fan. D) It was never used and therefore was not transformed.
Chemistry
1 answer:
Alchen [17]4 years ago
6 0

B) It was transformed into 350 J of heat energy.

Explanation:

The remaining 350J of energy must have been transformed into 350J of heat energy.

A fan works by converting electrical energy into heat energy.

  • According to the third law of thermodynamics "no system is 100% efficient". The conversion of the energy from one form to another involves a lost in energy.
  • Heat is one very familiar way by which energy can be lost.
  • Some component energy is used to heat the fan in the process and it is a wasted energy.
  • Friction surfaces a heat energy in this process.

learn more:

Third law of thermodynamics brainly.com/question/3564634

#learnwithBrainly

You might be interested in
Which of the following people would most often use chemistry in their work?
aleksklad [387]

Answer:

I would suggest the answer D: A paint manufacturer

5 0
3 years ago
Which best describes the trends in electronegativity on the periodic table? .
Vesna [10]
The anwser should be c
6 0
4 years ago
Read 2 more answers
For the reaction 2Co3+(aq)+2Cl−(aq)→2Co2+(aq)+Cl2(g). E∘=0.483 V2Co3+(aq)+2Cl−(aq)→2Co2+(aq)+Cl2(g). E∘=0.483 V what is the cell
frutty [35]

Answer:

\large\boxed{\text{0.512 V}}

Explanation:

We must use the Nernst equation

E = E^{\circ} - \dfrac{RT}{zF}lnQ

The equation for the cell reaction is is

2Cl⁻(0.384 mol·L⁻¹) + 2Co³⁺(0.324 mol·L⁻¹) ⇌ Cl₂(5.80 atm) + 2Co²⁺(0.158 mol/L)

Data:

E° = 0.483 V

R = 8.314 J·K⁻¹mol⁻¹

T = 25 °C

n = 2

F = 96 485 C/mol

 

Calculation:  

T = 25 + 273.15 = 298.15 K

Q = \dfrac{\text{[Cl}^{-}]^{2}[\text{Co}^{3+}]^{2}}{p_{\text{Cl}_{2}}^{2}\text{[Co}^{3+}]^{2}} = \dfrac{0.384^{2} \times 0.324^{2}}{5.80 \times 0.158^{2}} =0.1069\\\\E = 0.483 - \left (\dfrac{8.314 \times 298.15 }{2 \times 96485}\right ) \ln(0.1069)\\\\=0.483 -0.01285 \times (-2.236) = 0.483 + 0.02872 = \textbf{0.512 V}\\\text{The cell potential is } \large\boxed{\textbf{0.512 V}}

7 0
4 years ago
What was the Copernican revolution?
Zolol [24]

The Copernican revolution is about the model of the solar system and was given by a polish astronomer. Option C. The discovery that the universe was expanding.

The Copernican Revolution become the paradigm shift from the Ptolemaic model of the heavens, which described the cosmos as having Earth stationery on the center of the universe, to the heliocentric version with the solar on the center of the solar system.

Copernican Revolution, shift the subject of astronomy from a geocentric understanding of the universe, focused around Earth, to heliocentric knowledge, concentrated across the sun, as articulated by the Polish astronomer Nicolaus Copernicus.

This revolution changed the way of thinking of the solar system. Earlier it was thought that earth is in the center of the solar sysytem,i.e; people believed in the geocentric model, but according to Copernicus the solar system has the sun at the center and the remaining planets revolve around it i.e he believed in a heliocentric model.

Learn more about the Copernican revolution here:-brainly.com/question/11385060

#SPJ9

4 0
2 years ago
A gas mixture contains 10.0g of nitrogen and 5.00g of oxygen gas. calculate the partial pressure of oxygen gas in that mixture i
Alekssandra [29.7K]
The answer would be 0.85atm. 

Have a nice day! 
6 0
3 years ago
Other questions:
  • Why are you so much older on Mercury?
    9·2 answers
  • True or false: This balanced equation shows the combustion of ethane: 2C2H6 + 7O2 → 4CO2 + 6H2O
    5·1 answer
  • A chemical bond between two atoms results from a simultaneous
    7·2 answers
  • Determine the density of honey. *
    8·1 answer
  • An ion has an overall charge of -2. Its the nucleus is made up of 29 protons and 35 neutrons. How many electrons does the atom h
    5·1 answer
  • An atom has a mass number of 32 and 17 neutrons. What is the atomic number of this atom?
    7·1 answer
  • Identify the structure of a minor product formed from the radical chlorination of propane, which has molecular formula C3H6Cl2 a
    15·1 answer
  • _______ reach the surface first during an earthquake.
    13·1 answer
  • Infectious agents vary in their size and shape. Which infectious agent tends to be the smallest?
    5·1 answer
  • What do you think is happening at the nanoscale that keeps the salad dressing with an emulsifier mixed?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!