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iogann1982 [59]
4 years ago
5

Predict the missing component of each reaction

Chemistry
2 answers:
sammy [17]4 years ago
8 0

Answer:  1. 3O_2

2. H_2O

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

1. Decomposition is a type of chemical reaction in which one reactant gives two or more than two products.

2KClO_3\rightarrow 2KCl+3O_2

Thus in balanced chemical decomposition of 2KClO_3 , the missing component is 3O_2.

2. Synthesis is a type of chemical reaction in which two reactants combine to give a single product.

MgO+H_2O\rightarrow Mg(OH)_2

Thus in balanced synthesis reaction of Mg(OH)_2 , the missing component is H_2O.

Hoochie [10]4 years ago
8 0

Answer :

(1) The missing component is 3O_2.

(2) The missing component is H_2O.

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

<u>Part 1 :</u>

Decomposition reaction : It defined as the reaction in which larger reactant molecules decomposes to give two or more smaller products molecule.

The balanced chemical reaction will be:

2KClO_3\rightarrow 2KCl+3O_2

Thus, in this reaction the missing component is 3O_2.

<u>Part 2 :</u>

Synthesis reaction : It is defined as the chemical reaction where multiple substances or reactants combine to form a single product.

MgO+H_2O\rightarrow Mg(OH)_2

Thus, in this chemical reaction the missing component is H_2O.

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find the energy of one photon:

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What I've done so far is convert wave length to m and energy to j. 

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3.38 x 10 ^19 J x 1000 kj / 1 j = 3.37 x 10 ^ -16 Kj
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3.38 x 10 ^-19 J
should be negative

then 3.38 x 10 ^18 J x 1kJ/1000 J

you're converting from J to kJ.. just like meters to kilometres, you wouldn't multiply you would divide
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