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4 years ago

When an electron is displaced in a semiconductor, the hole that's left behind is

2 answers:

5 0

answer is A : attracted to the negative terminal of the voltage source
I think, that the "hole"moves as it captures a free electron leaving another hole in a slightly different place. The electron leaving leaves a net + charge, which is attracted to the negative terminal. Because the "hole" behaves as a positive charge it is attracted towards the negative terminal.

brilliants [131]4 years ago

3 0

Answer:

A. attracted to the negative terminal of the voltage source.

Explanation:

bc that is what the hole that's left behind does

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Pls answer

nataly862011 [7]

Answer:

The sound wave travelled more quickly through the glass of water than the metal pole.

The sound wave travelled the fastest through the helium.

The sound wave travelled the slowest through the metal pole.

These 3 are most likely true.

If you have to pick just one, the sound wave travelled the fastest through the helium.

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3 years ago

Read 2 more answers

A swimmer can swim 1000 m in 400 seconds. What is her average speed in m/s?

maxonik [38]

Answer:

2.5m/s

Explanation:

speed= distance/time

distance=1000m

time=400s

1000m/s/400s=2.5m/s

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3 years ago

Please help....... what should I do in order to study effectively?

Maurinko [17]

1) Find a good studying spot.
2) Stay Away From Your Phone or any other things that distract you.
3) Take a break after about 1-1 hour 30 minutes- break should be about 10 minutes.
4) make sure notes are complete for what you are revising for.
5) watch videos/ use class notes/ your own notes/ revision guides.
6) test yourself by answering exam style questions or by flash cards.

7 0

3 years ago

What is the molality of a solution containing 5.0 moles of solute in 3.2 kg of solvent? Round to the nearest tenth. Don't forget

Alisiya [41]

The molality of the solution is a measure of its concentration that can be calculated by dividing the amount of substance in moles by the amount of the solvent in kilograms. Mathematically, this can be expressed as that of the equation below.
molality = amount of solute (mole) / amount of solvent (kg)
molality = 5 moles / 3.2 kg
molality = 1.5625 m
Rounding off the answer to the nearest tenths, will give the final answer of 1.6 m.

4 0

3 years ago

The compound potassium carbonate, K_2 CO_3 is soluble in water. Write the formulas for the ions that interact with water as show

Rus_ich [418]

The compound potassium carbonate(K₂CO₃) is soluble in the water. The formulas for the ions that interact with the water is K⁺ and (CO₃)²⁻.

Dissociation of any compound is defined as the breaking of a compound into a simpler substance which is capable of recombining under different conditions. The compound potassium carbonate(K₂CO₃) is an ionic compound, and ionic compound is formed by a combination of cation and anion. When ionic compounds are dissolved in the water, it separates into the cations and anions.

Potassium carbonate(K₂CO₃) is a strong electrolyte. It means that it is completely dissociate in the water. Its dissociation in the water is shown as

K₂CO₃(aq)→2K⁺(aq)+(CO₃)²⁻(aq)

Therefore, the compound potassium carbonate forms K⁺ and (CO₃)²⁻ ions when interact with the water.

The question looks incomplete but the complete question is

The compound potassium carbonate is a strong electrolyte. Write the reaction when solid potassium carbonate is put into water

To know more about dissociation

brainly.com/question/19053344

#SPJ4

8 0

2 years ago