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postnew [5]
3 years ago
15

During all chemical reactions, mass, energy, and charge are

Chemistry
1 answer:
choli [55]3 years ago
7 0

Answer:

The correct answer is option 2.

Explanation:

Law of conservation of Mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

This also means that in a balanced chemical reaction total mass on the reactant side must be equal to the total mass on the product side.

Law of conservation of energy states that energy can neither be created nor be destroyed but it can only be transformed from one form to another form.The total energy of an  remains constant in a chemical  reaction,.

For example:

2H^++S^{2-}\rightarrow H_2S

Mass of reactants = 2\times 1 g/mol + 1\times 32 g/mol = 34 g/mol

Mass of products = (2\times 1 g/mol+1\times 32 g/mol)=34 g/mol

Charge on reactant side = Charge on product side

2\times (+1) +(-2)=0

0=0

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Answer: 2NaNO_3(aq)+(CH_3COO)_2Pb(aq)\rightarrow 2CH_3COONa(aq)+Pb(NO_3)_2(aq)

Explanation: A double displacement reaction is one in which exchange of ions take place.

The compounds which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.

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3 years ago
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Answer:

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2 years ago
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steposvetlana [31]
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3 years ago
Will mark as brainiest <br> Please help
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Answer:

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