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
Debora [2.8K]
3 years ago
11

When an electron is displaced in a semi conductor, the hole that’s left behind is?

Chemistry
1 answer:
lisov135 [29]3 years ago
6 0

Explanation:

holes are left due to space left out the migrating electrons. they are positive charge carriers. if the electron moves in one direction, the holes appear to move in the opposite direction.

You might be interested in
A metal sample weighing 129.00 grams and at a temperature of 97.8 degrees Celsius was placed in 45.00 grams of water in a calori
Nitella [24]

Answer : The specific heat of metal is 0.481J/g^oC.

Explanation :

In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.

q_1=-q_2

m_1\times c_1\times (T_f-T_1)=-m_2\times c_2\times (T_f-T_2)

where,

c_1 = specific heat of metal = ?

c_2 = specific heat of water = 4.184J/g^oC

m_1 = mass of metal = 129.00 g

m_2 = mass of water = 45.00 g

T_f = final temperature = 39.6^oC

T_1 = initial temperature of metal = 97.8^oC

T_2 = initial temperature of water = 20.4^oC

Now put all the given values in the above formula, we get

129.00g\times c_1\times (39.6-97.8)^oC=-45.00g\times 4.184J/g^oC\times (39.6-20.4)^oC

c_1=0.481J/g^oC

Therefore, the specific heat of metal is 0.481J/g^oC.

4 0
3 years ago
Darwin called this idea of certain traits being selected in order for an organism to reproduce sexual selection. In crickets and
tamaranim1 [39]

Th correct answer is option C. Calling can be hazardous because it also attracts parasites and predators.

The mating call is used by the males to attract females for sexual reproduction. By using vocal sounds males are not only making themselves attractive to females, they are also making themselves vulnerable to predators.

Thus the mating call can have a disastrous effect on the survival of the species.

7 0
2 years ago
Read 2 more answers
If the ph of a solution is 6.2 what would the poh be
horsena [70]
PH + poH = 14
6.2 +poH = 14
poH = 7.8
7 0
3 years ago
Read 2 more answers
A small piece of hot metal is placed in cooler water. The metal is left in the water
scoundrel [369]

Answer: The amount of energy lost by the metal is equal to the amount of energy gained by the water

Explanation:

5 0
2 years ago
10 Points
slamgirl [31]

Answer:

D

Explanation:

The indivisibility of an atom was proved wrong an atom can be further subdivided into protons, neutrons and electrons. However an atom is the smallest particle that takes part in chemical reactions......

hope i helped

pls mark brainliest,,,,,thanks

5 0
2 years ago
Other questions:
  • If 0.640 g of beautiful blue crystals of azulene is dissolve in 99 g of benzen, the resulting solutions boils at 80.23 degrees c
    15·1 answer
  • What happens when a glass rod is dipped in HCl and is brought near ammonia gas?
    11·1 answer
  • How many grams of carbon monoxide are needed to react with an excess of iron (III) oxide to produce 198.5 grams of iron? Fe2O3(s
    13·1 answer
  • Use the drop-down menus to select the part of Earth best described by each phrase.
    12·2 answers
  • What is classification? write its two importance. In chemistry
    8·1 answer
  • How many milliliters of 2.5 M HCl are required<br> to exactly neutralize 1.5 L of 5.0 M NaOH?
    13·1 answer
  • F a balloon containing 1000 L of gas 50 Celsius and 101.3kpa rises to an altitude where pressure is 27.5 kpa amd the temperature
    14·1 answer
  • If you have 5 unknowns and they were secondary alcohol aldehyde, carboxylic acid, amine, and alkane Put plan to identify the unk
    8·1 answer
  • What is the meaning of ground state energy?​
    14·1 answer
  • Some volatile organic compounds can be detected by hydrogeologists in the field or labs because of the ______ emitted from the g
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!