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AfilCa [17]
3 years ago
10

Which important change in electronic devices, such as televisions and computers, is a result of the use of metalloids as semicon

ductors?
A) Electronic devices have become smaller.
B) Electronic devices are now more brittle.
C) Electronic devices now use more energy.
D) Electronic devices have become more expensive.
Chemistry
2 answers:
nalin [4]3 years ago
8 0

Answer:

option A

Explanation:

correct answer is option A

metalloids are the substances which are not metal and also are not non-metal they have the property of both metals and non-metals.                                                  

metalloids example are silicon, Germanium, Arsenic (As) etc.

Usage of metalloids as semiconductor has  decreases the size of the circuits which leads to the shrink the size of many electronic devices such as TV, mobile etc.

scZoUnD [109]3 years ago
7 0

Answer:

Option (A) Electronic devices have become smaller.

Explanation:

Semiconductor devices are the devices which are based on the properties of the  semiconductor materials like  germanium, silicon, gallium and arsenide. The commonly used materials in electronic devices are the silicon and  germanium because of their low cut off voltages i.e 0.7 v and 0.3 v. Semiconductor materials made the electronic devices smaller as they replaced the Vacuum tubes which was bulky with high operating voltage, high power consumption.

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Travka [436]

Kinetic energy id energy of motion  and is equal to 1/2mv^2 where m = mass and v = velocity.

So the answer is a salmon leaping up a waterfall.

8 0
3 years ago
When is di- used in the name of a hydrocarbon?
harkovskaia [24]
Di- is used when you are naming organic compounds. If you have the same substituent repeated twice in the compund
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6 0
3 years ago
Complete the sentences to identify the trend in first ionization energies as one proceeds down the group 7A elements and explain
Harrizon [31]

Answer:

a)decrease

b)increase

c)smaller

d)smaller

Explanation:

Ionization energy decreases down the group due to increase in the atomic radius. The distance between the outermost electron and the nucleus increases hence the nuclear attraction for the outermost electrons become smaller and the ionization energy also become smaller as electrons are now easily removed from the outermost shell.

Hence the group of answer choices provided above.

3 0
4 years ago
When 28242 J are transferred to water sample, its temperature increases 18⁰C to 63⁰C. Determine the mass of the water sample.
ivanzaharov [21]

Answer:

149.79

Explanation:

Formula

Joules = m * c * delta (t)

Givens

J = 28242

m = ?

c = 4.19

Δt = 63 - 18 = 45

Solution

28242 = m * 4.19 * 45

28242 = m * 188.55

m = 28242 / 188.55

m = 149.79

8 0
3 years ago
How many kPa are in 2,150 mmHg?<br> 2.83 kPa<br> 287 kPa<br> 1.61 ´ 104 kPa<br> 2.18 ´ 105 kPa
vlabodo [156]

Answer:

2150 mmHg ( 1 atm / 760 mmHg ) ( 101.325 kPa / 1 atm ) = 286.643 kPa

Therefore, the closest value from the choices is the second one which has the value of 287, this would be answer.

Explanation:

I stole diss from someone else so Im juss hopin iss right

3 0
3 years ago
Read 2 more answers
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