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damaskus [11]
3 years ago
15

Which of the following is an example of a decomposition reaction? 1) H2 + O2 ----------→ H2O 2) MgO2 -------------→ Mg + O2 3) M

gSO4 + 2NaCl ----------→ MgCl2 + Na2SO4 4) 2Na + Cl2 -----------→ 2NaCl
Chemistry
1 answer:
podryga [215]3 years ago
4 0

Answer:

2) MgO ---→ Mg + O2

Explanation:

Chemical decomposition is defined as the breakdown or breaking of a single molecule or entity into two or more smaller fragments.

Chemical decomposition is usually regarded as the exact opposite of chemical synthesis. In most cases, the chemical reaction in which two or more products are formed from a single reactant is called a decomposition reaction.

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2 years ago
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Alright the very first thing you need to do is balance the equation:

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(0.75M) x (0.094L) = C2 x (0.329L)

Rearrange equation to solve for C2:

<u>(0.75M) x (0.094L)</u>  =  C2

    (0.329L)

C2 = 0.214 M (Rounded)

<u>When the reaction is finished, the NaCl solution will have a molarity concentration of 0.214 M.</u>

<u></u>

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2 years ago
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Explanation:

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