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3 years ago

Mechanism of doping in physics

Physics

1 answer:

rodikova [14]3 years ago

6 0

A semiconductor is a dopant type mechanism

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The liquid state into a gaseous state

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Which of the following amounts to a scientific research process that can be replicated?

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2 years ago

How many protons are in one kg of lead? b) How many electrons are in one kg of lead? c) What is the total negative charge of the

mina [271]

Answer:

Number of protons = $2.3836\times 10^{26}$

Number of electrons = $2.3836\times 10^{26}$

Charge on these electrons = - $3.8185\times 10^{7}\ C$

Explanation:

1 atom of lead contains 82 protons and 82 electrons

1 mole = $6.023\times 10^{23}$ atoms

Thus,

1 mole of lead contains $82\times 6.023\times 10^{23}$ protons

Also, 1 mole of lead weighs 207.2 g

So,

207.2 g of lead contains $82\times 6.023\times 10^{23}$ protons

1 kg = 1000 g

So,

1000 g or 1 kg of lead contains $\frac {82\times 6.023\times 10^{23}}{207.2}\times 1000$ protons

Number of protons = $2.3836\times 10^{26}$

Also, for neutral atom, number of protons = number of electrons.

Thus,

Number of electrons = $2.3836\times 10^{26}$

Also,

Charge of 1 electron = - $1.602\times 10^{-19}\ C$

Charge on these electrons = - $2.3836\times 10^{26}\times 1.602\times 10^{-19}\ C$

Charge on these electrons = - $3.8185\times 10^{7}\ C$

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3 years ago

The bulb in the circuit shown in figure does not glow. Why? Redraw the circuit diagram by making necessary change in it so that

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Answer:The bulb did not glow as the switch is not turned on which obstructs electric current to flow through it. Also, the battery in the figure has both terminals as positive. It should be one negative terminal and one positive terminal.Redrawn diagram is also given

Please MARK AS BRAINLIEST AND FOLLOW ME.

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3 years ago

Mechanism of doping in physics​

Mechanism of doping in physics