Chemistry, 12.02.2020 03:18 eks8252

As computer processor speeds increase, it is necessary for engineers to increase the number of circuit elements packed into a given area. Individual circuit elements are often connected using very small copper "wires" deposited directly onto the surface of the chip. In some processors, these copper interconnects are about wide. What mass of copper would be in a length of such an interconnect, assuming a square cross section? The density of copper is 8.96 g/cm^3.

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Answer from: sarinaneedshelp01

Explanation:

As the cross-section of wire is a square so, it means that height of the wire is same length as the width.

Now, we will convert both height and width into centimeters as follows.

h = w

= $\frac{22 nm \times 10^{-9} m}{1 nm} \times \frac{1 cm}{1 m}$

= $2.2 \times 10^{-6} cm$

Length of wire will also be converted into centimeters as follows.

l = $\frac{1 mm \times 1 m}{1000 mm} \times \frac{100 cm}{1 m}$

= 0.1 cm

Now, we will calculate the volume of the wire as follows.

V = $l \times b \times h$

= $0.1 cm \times 2.2 \times 10^{-6} cm \times 2.2 \times 10^{-6} cm$

= $4.84 \times 10^{-13} cm^{3}$

Now, we will convert moles of copper into atoms of copper as follows.

$\frac{4.84 \times 10^{-13} cm^{3} \times 8.96 g Cu \times 1 mol Cu \times 6.022 \times 10^{23}}{1 cm^{3} Cu \times 63.546 g Cu \times 1 mol Cu}$

= $4 \times 10^{10} atom Cu$

Thus, we can conclude that there will be $4 \times 10^{10} \text{atom Cu}$ would be in a length of such an interconnect, assuming a square cross section.

Answer from: Quest

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is $1s^{2}2s^{2}2p^{6}3s^{1}$ and electronic configuration of phosphorous is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{3}$ .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

$3na + p \rightarrow na_{3}p$

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.

Electrons are transferred from atoms of to atoms of this transfer makes the sodium atoms and the

Answer from: Quest

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