3 years ago

When an electric field is applied to a metallic crystal, the movement of electrons is .

2 answers:

8 0

Your answer is random because metals form huge structures in which electrons in the outer shell of the metal it makes atoms free to move.

Katyanochek1 [597]3 years ago

6 0

The answer would be Directional. The movement of electrons is directional.

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Zina [86]

Answer:

Explanation:

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= 500 /( 40 + 12 + 16x 3)

= 5 mole

n CaO = 5 moles ( from the balanced equation we have 1:1 moles )

mass of CaO = nCaO X m.wt

5 x( 40 +16 )

= 280 grams

5 0

3 years ago

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Basile [38]

The answer is homogeneous

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Dvinal [7]

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3 years ago

The pOH of a solution is 9.21. Calculate the hydrogen ion concentration of the solution. Be sure to report your answer to the co

11Alexandr11 [23.1K]

Answer:

[OH-] = 6.17 *10^-10

Explanation:

Step 1: Data given

pOH = 9.21

Step 2: Calculate [OH-]

pOH = -log [OH-] = 9.21

[OH-] = 10^-9.21

[OH-] = 6.17 *10^-10

Step 3: Check if it's correct

pOH + pH = 14

[H+]*[OH-] = 10^-14

pH = 14 - 9.21 = 4.79

[H+] = 10^-4.79

[H+] = 1.62 *10^-5

6.17 * 10^-10 * 1.62 * 10^-5 = 1* 10^-14

3 0

2 years ago