During chemical reactions, energy is

Chemistry

2 answers:

slamgirl [31]3 years ago

7 0

Answer:

During chemical reactions, energy is used to break bonds in reactants

Explanation:

It is a process in which one or more substances, the reactants, are converted to one or more substances.

maria [59]3 years ago

6 0

All chemical reactions involve energy. Energy is used to break bonds in reactants, and energy is released when new bonds form in products. Endothermic reactions absorb energy, and exothermic reactions release energy. The law of conservation of energy states that matter cannot be created or destroyed.

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marusya05 [52]

Which nitrogen base sequence is the partner of C-A-T-C-G-A?
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2 years ago

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You are given a 1.50 g mixture of sodium nitrate and sodium chloride. you dissolve this mixture into 100. ml of water and then a

Elanso [62]

When AgNO₃ solution is added to mixture of NaNO₃ and NaCl, it reacts with NaCl and gives precipitate of AgCl, which is white solid. The reaction takes place in 1:1 stoicheometric ratio as per the following balanced reaction:

NaCl + AgNO₃→ AgCl ↓ + NaNO₃. As per reaction 1 mole NaCl reacts with 1 mole AgNO₃ and gives of solid precipitate of 1 mole AgCl.

0.641 g= $\frac{0.641}{143.32}$ = 4.47 X $10^{-3}$ mole of solid AgCl is produced. This indicates 4.47 X $10^{-3}$ mole NaCl = $4.47 X 10^{-3}X58.5$ g of Nacl reacts to give 0.641 g of AgCl. So, mass percentage of NaCl present in mixture= $\frac{0.26}{1.5} X 100$ = 17.33 %.