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

1 answer:

4 0

When an electric field is applied to a metallic crystal, the movement of electrons is random. Metals form giant structures in which electrons in the outer shells of the metal atoms are free to move. Hope this answers the question. Have a nice day.

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The conversion of acetyl chloride to methyl acetate occurs via the following two-step mechanism: Reaction sequence of acetyl chl

Svetlanka [38]

If the concentration of acetyl chloride is increased ten times the rate of reaction is increased ten times.

The conversion of acetyl chloride to methyl acetate is a substitution reaction. Recall that a substitution reaction is one in which a moiety in a molecule is replaced by another.

In this reaction, the CH3O- ion replaces the chloride ion. In the first step, the CH3O- ion attacks the substrate in a slow step. This creates a tetrahedral intermediate. Loss of the chloride ion yields the methyl acetate product.

The rate determining step is the formation of the tetrahedral intermediate. Since the reaction is first order in the acetyl chloride, if its concentration is increased ten times the rate of reaction is increased ten times.

Learn more: brainly.com/question/5624100

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2 years ago

Three isotopes of silicon have mass numbers of 28,29, and 30 with an average atomic mass of 28.086 what does this say about the

Sedbober [7]

Answer is: silicon isotope with mass number 28 has highest relative abundance, this isotope is the most common of these three isotopes.

Ar₁(Si) = 28; the average atomic mass of isotope ²⁸Si.

Ar₂(Si) =29; the average atomic mass of isotope ²⁹Si.

Ar₃(Si) =30; the average atomic mass of isotope ³⁰Si.

Silicon (Si) is composed of three stable isotopes, ₂₈Si (92.23%), ₂₉Si (4.67%) and ₃₀Si (3.10%).

ω₁(Si) = 92.23%; mass percentage of isotope ²⁸Si.

ω₂(Si) = 4.67%; mass percentage of isotope ²⁹Si.

ω₃(Si) = 3.10%; mass percentage of isotope ³⁰Si.

Ar(Si) = 28.086 amu; average atomic mass of silicon.

Ar(Si) = Ar₁(Si) · ω₁(B) + Ar₂(Si) · ω₂(Si) + Ar₃(Si) · ω₃(Si).

28,086 = 28 · 0.9223 + 29 · 0.0467 + 30 · 0.031.

8 0

2 years ago

What mass of Hg will occupy a volume of 75.0 mL?

k0ka [10]

75.0 mL in liters:

75.0 / 1000 => 0.075 L

1 mole -------------------- 22.4 L ( at STP)
( moles Hg) ------------- 0.075 L

moles Hg = 0.075 x 1 / 22.4

moles = 0.075 / 22.4

= 0.00334 moles of Hg

Hg => 200.59 u

1 mole Hg ----------------- 200.59 g
0.00334 moles Hg ----- ( mass Hg )

mass Hg = 200.59 x 0.00334 / 1

mass Hg = 0.6699 / 1

= 0.6699 g of Hg

7 0

2 years ago

A classroom has a volume of 278 m3. What is its volume in km3

Tcecarenko [31]

1 m = 0,001 km
1m³ = 0,000000001 km³

278 m³ = 0,000000278 km³ = 2,78×10^(-7) km³

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3 0

2 years ago

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What mixture is it ?

joja [24]

The mixture should be

Heterogeneous

Explanation:

Definition: Diverse in character or content.

7 0

3 years ago