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3 years ago

In order for a nonmetal to obey the octet rule, it____.

Chemistry

1 answer:

Triss [41]3 years ago

6 0

Answer: C. gains electrons.

Explanation:

Octet rule states that <em>"it is the tendency of the atom to have eight electrons in its outermost valence electron shell</em>".

Nonmetals obey octet rule by gaining electrons to its outermost valence electron shell.

For example: Cl which has 17 electron and its electronic configuration is 2,8,7 and it gain electron to have 8 electrons in its outermost electron shell to form Cl⁻ with electronic configuration of 2,8,8.

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3 years ago

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3 years ago

Calculate the value of the diffusion coefficient D (in m2/s) at 547°C for the diffusion of some species in a metal; assume that

svetlana [45]

Answer : The value of diffusion coefficient is, $2.97\times 10^{-16}m^2/s$

Explanation :

Formula used :

$D=D_o\times \exp \left(-\frac{Q_d}{RT}\right )$

where,

D = diffusion coefficient = ?

$D_o$ = $5.6\times 10^{-5}m^2/s$

$Q_d$ = $177kJ/mol$

R = gas constant = 8.314 J/mol.K

T = temperature = $547^oC=273+547=820K$

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

$D=5.6\times 10^{-5}m^2/s\times \exp \left(-\frac{177kJ/mol}{(8.314J/mol.K)\times (820K)}\right )$

$D=2.97\times 10^{-16}m^2/s$

Thus, the value of diffusion coefficient is, $2.97\times 10^{-16}m^2/s$

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3 years ago

2. Give a "water-wise" alternative to each

Kitty [74]

Answer:

1. sweep it instead

2.use a wateringcan with a percise nossole to water your plants efectivly 3.keep a jug of water in your frisge

Explanation:

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3 years ago

Undigested and unabsored materials from the small intestine pass into the

Georgia [21]

Answer: The unabsorbed and undigested food then passes from the ileum into the cecum, the beginning of the large intestine. This food residue is full of bacteria.

Explanation:

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3 years ago