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
Pachacha [2.7K]
3 years ago
10

Which of the following is the correct definition of convection?

Chemistry
2 answers:
Paraphin [41]3 years ago
8 0

Answer:

A: The transfer of heat by currents.

Explanation:

Convection is the transfer of heat by currents, typically within a liquid or a gas. When heat is transferred by convection, matter flows.

kvv77 [185]3 years ago
3 0

Answer: A. the transfer of heat by currents

Explanation: There are three modes of heat transfer:

1) Conduction: This type of heat transfer happens when there is direct contact between the two object.  Example: heating a pan on stove.

2) Convection: This type of heat transfer happens when there is a movement of fluid (liquid or gas) due to the movement of hot layers to the top and cold layers to the bottom which leads to convection currents. Example: Heating of swimming pool.

3) Radiation: This type of heat transfer happens when there is direct transfer of energy through space. Example: Heating of earth's surface.

B. The transmission of heat across matter is conduction.

C. The electromagnetic radiation from the surface of an object which is due to the object's temperature is radiation.

D. The transmission of heat across empty space is radiation.

You might be interested in
2. What is the mass of one mole of Na?
borishaifa [10]
Sodium, Atomic mass: 22.989769 g
You can see in a periodic table
5 0
3 years ago
A sample of water at 100°C is converted to steam after absorbing 820 kJ of heat. How grams of H2O are contained in the sample? A
Varvara68 [4.7K]
Since water is already at 100<span>°C all the energy is used to evaporate it. 
Now we can calculate how many </span>mols of water are evaporated with 820kJ.
N= \frac{820}{41} =20 mol
We calculated that we got 20 mols of water evaporated. Now, all we have to do is find how many grams is a mol of water. Molar mass of water is <span>20.16 g/mol.
</span>The final answer is:
m=20*20.16=403.2g




7 0
3 years ago
25 °C = ________ K <br><br> which one <br> 298<br> 0<br> 33 <br> 197
Paraphin [41]

Answer:

298

hope this helps

have a good day :)

Explanation:

5 0
3 years ago
Read 2 more answers
Why does ice get colder when you melt it?
galina1969 [7]
It doesn't?

Heat transfers from hot objects to cold objects and for ice to melt it has to increase the temperature.
8 0
3 years ago
1/4 checkpoint
DochEvi [55]

Answer:

here's the answers

Explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • Which piece of evidence would suggest an unknown substance is an ionic compound
    15·2 answers
  • Aerosol cans contain a written warning not to subject the can to high temperatures or incinerate. Suppose an aerosol can is heat
    13·2 answers
  • If a hypothesis can stand the test of repeated examination, it can become a _____.
    10·2 answers
  • The steps of scientific method in order are?
    14·2 answers
  • Which mass measurement contains four significant figures?
    13·2 answers
  • Elements can be described by various properties, and identified by their boiling and melting points. For example, gold melts at
    15·2 answers
  • What is the short name used to refer to the elements that make up livings?. Single choice.
    5·2 answers
  • CsBr formula name???
    5·1 answer
  • A 25 mL syringe is used to measure both 10mL of a solution and 20mL of a solution. Which measurement, if any, has the biggest pe
    8·1 answer
  • Upon what dose the force of gravity between two objects depend?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!