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madreJ [45]
2 years ago
12

All of the halogens, group 17, have seven valence electrons. which of these would represent the oxidation number of the halogens

such as chlorine and bromine?
Chemistry
1 answer:
fomenos2 years ago
6 0
It depends if it occurs naturally it has oxidation number of 0
but when it react with other element it has an oxidation number of -1
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When an electron moves from a lower energy level to a higher energy level, the atom:
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Answer:

A. absorbs light

Explanation:

For an electron to move from a lower energy level to a higher energy level, energy needs to be added to the atom.

In most cases this required energy will be light: The electron of the atom will absorb the energy of the light and move to a higher energy level.

When said electron comes back to the lower energy level, the atom will conversely give off light.

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How many dots should be shown in the Lewis dot diagram of oxygen? (1 point)
deff fn [24]

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8 0
3 years ago
When chlorobenzene reacts with Mg in ether followed by CO2 and neutralization with dilute HCl, __________ will be formed.
allsm [11]

Answer:

c. benzoic acid

Explanation:

The given reaction is an example of a Grignard reaction:

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Consider the following data showing the initial rate of a reaction (A→products) at several different concentrations of A.
OlgaM077 [116]

Answer:

(1) order = 2

(2) R = K [A]²

Explanation:

Given the reaction:

A--------->Product

The rate constant relation for the reaction is given as:

R(i) = K [A]............(*)

Where R(I) is rate constant at different concentration of A.

Taking the rate constant as R1, R2 and R3 for the different concentrations respectively. Then the following equations results

0.011 = K [0.15] ⁿ.........(1)

0.044 = K [0.30]ⁿ .......(2)

0.177 = K [0.60]ⁿ .........(3)

Dividing (2) by (1) and (3) by (1)

Gives:

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4 = 2ⁿ; 2² = 2ⁿ; n = 2

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16.09 = 4ⁿ

16.09 = 16 (approximately)

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Hence the order of the reaction is 2.

The rate law is R = K [A]²

4 0
3 years ago
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