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dolphi86 [110]
3 years ago
12

Is Oxygen - O2 a pure substance or a mixture?

Chemistry
1 answer:
svetlana [45]3 years ago
5 0
Oxygen is a pure substance, as it is composed of only a single kind of atom. Which is the oxygen atom, it cannot be broken or degraded down any further into constituents that make up the element. In terms of both chemically and physically.
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The diameter of a hydrogen atom is 106 pm. Find the length in kilometers of a row of 4.34 x 1023 hydrogen atoms?
valina [46]

The length in kilometers of a row of 4.34 x 1023 hydrogen atoms is 4.34 x 10¹⁴ km.

<h3>Length of the entire hydrogen atoms</h3>

The length of the entire hydrogen atom is calculated as follows;

Length of the row = number x diameter of one

Length of the row = 4.34 x 10²³ x 10⁶ x 10⁻¹²

Length of the row = 4.34 x 10¹⁷ m

Length of the row = 4.34 x 10¹⁴ km

Thus, the length in kilometers of a row of 4.34 x 1023 hydrogen atoms is 4.34 x 10¹⁴ km.

Learn more about diameter of hydrogen atom here: brainly.com/question/13796082

#SPJ1

3 0
2 years ago
What makes 3Ag2S+2Al-&gt;Al2S3+6Ag(s) oxidized and reduced
Vikentia [17]
It makes it thinner to calcite the rhythm
5 0
2 years ago
What functional group consists of a carbon atom double-bonded to an oxygen atom?
DaniilM [7]

Answer:

The answer to your question is: letter B.

Explanation:

Carbon atom double-bonded to an oxygen atom    C= O,

a) Carbohydrate group   this group does not exist

b)Carbonyl group  This option is right, carbonyl group is C=O

c) Hydroxyl group  This option is incorrect, hydroxyl group is OH, very different from C=O

d) Ketone group Ketone group does not exist, ketones have the same functional group as aldehydes (C=O)

7 0
3 years ago
Read 2 more answers
If the initial concentration of SO2Cl2 is 0.125 M , what is the concentration of SO2Cl2 after 210 s ?
andre [41]

Complete question:

The decomposition of SO2Cl2 is first order in SO2Cl2 and has a rate constant of 1.44×10⁻⁴ s⁻¹ at a certain temperature.

If the initial concentration of SO2Cl2 is 0.125 M , what is the concentration of SO2Cl2 after 210 s ?

Answer:

After 210 s the concentration of SO2Cl2  will be 0.121 M

Explanation:

ln\frac{[A_t]}{[A_0]} =-kt

where;

At is the concentration of A at a time t

A₀ is the initial concentration of A

k is rate constant = 1.44×10⁻⁴ s⁻¹

t is time

ln(At/A₀) = -( 1.44×10⁻⁴)t

ln(At/0.125) =  -( 1.44×10⁻⁴)210

ln(At/0.125) = -0.03024

\frac{A_t}{0.125} = e^{-0.03024

At/0.125 = 0.9702

At = 0.125*0.9702

At = 0.121 M

Therefore, after 210 s the concentration of SO2Cl2  will be 0.121 M

6 0
3 years ago
how would you write the electron configuration of the outermost principal energy level of a group 16 elements in the ground stat
Strike441 [17]

Explanation:

Group 16 elements are oxygen family elements also called as chalcogens.This  name is given for the their ore forming abilities.  It consists of the elements oxygen, sulfur, selenium, tellurium and polonium.

Group 16 have six electron in the outermost principal energy level  or the valence shell and their general electronic configuration is ns2 and np4.

3 0
3 years ago
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