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sp2606 [1]
3 years ago
12

Choose the CORRECT statement.

Chemistry
1 answer:
devlian [24]3 years ago
7 0

Answer:

Paper has been changed chemically when it is torn into pieces.

Particles of matter move more quickly when their temperature gets cooler.

(this two are correct)

Explanation:

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How do chemists envision reactions taking place in term of the collision model for reaction?
Sergio [31]
The  chemist  envision reaction  take  place  when  molecules/atoms  collide with  respect  to  the  correct  amount  of  energy and  in  the  correct  position  so  that   the  bond  can  be  formed.These   means  that  the  reaction  take    place  when  two  or more  molecules collides  and a  reaction  occurs.
4 0
4 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
3 years ago
123.0 x 12.35 / (0.05 x 6.049) significant figures
VMariaS [17]

Answer:

123.0*12.35/(0.05*6.049)

first do in small bracket 123.0*12.35/0.30245

and then divide 123.0*40.83319557

and multiply 5022.483055

6 0
3 years ago
Identify each definition that applies to the compound in red check all that apply mg(oh)2
sp2606 [1]

Answer:

the answer is in the picture

4 0
3 years ago
How do lewis structures relate to oxidation number multiple choice?
spayn [35]
I don't know your mc choices so I am going to go with "the number of valence electrons" 

Oxidation number: the amount of electrons an atom gains, loses or shares when it forms chemical bonds. As for the valence electrons, those are the electrons that are responsible for bonds/ reactions. 
3 0
3 years ago
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