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S_A_V [24]
2 years ago
5

A chemical reaction in which bonds are created is usually associated with ________.

Chemistry
1 answer:
iogann1982 [59]2 years ago
8 0

A chemical reaction in which bonds are created is usually associated with <u>The </u><u>consumption </u><u>of </u><u>energy</u>

The formation of a bond by a chemical reaction is called bond formation, and the breaking of a bond by a chemical reaction is called bond dissociation.

In the modern view of chemical reactions, the bonds between atoms in the reactants must be broken, and the atoms or fragments of molecules reconstruct into products by forming new bonds. Energy is absorbed to break bonds and released when bonds are formed.

Chemical reactions break chemical bonds between reactant molecules (particles) and form new bonds between atoms in product particles (molecules). The number of atoms remains the same before and after the chemical change, but the number of molecules changes.

Learn more about consumption here;

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What is the molarity of an HCl solution if 43.6 mL of a 0.125 M NaOH solution are needed to titrate a 25.0 mL sample of the acid
Sveta_85 [38]

Answer: The molarity of an HCl solution is 0.218 M if 43.6 mL of a 0.125 M NaOH solution are needed to titrate a 25.0 mL sample of the acid.

Explanation:

Given: V_{1} = 43.6 mL,      M_{1} = 0.125 M

V_{2} = 25.0 mL,        M_{2} = ?

Formula used to calculate the concentration of acid is as follows.

M_{1}V_{1} = M_{2}V_{2}

Substitute the values into above formula.

M_{1}V_{1} = M_{2}V_{2}\\0.125 M \times 43.6 mL = M_{2} \times 25.0 mL\\M_{2} = 0.218 M

Thus, we can conclude that the molarity of an HCl solution is 0.218 M if 43.6 mL of a 0.125 M NaOH solution are needed to titrate a 25.0 mL sample of the acid.

3 0
3 years ago
Identify the compound whose solubility decreases with increasing temperature.
Veronika [31]

Answer is: Na₂SO₄ (sodium sulfate).

The solubility of sodium sulfate increases up to 32.38°C and than decreases at higher temperatures, the solubility becomes almost independent of temperature.

At 32.38°C it releases of crystal water and melting of the hydrated salt.

Sodium sulfate is the white, inorganic compound.

Sodium sulfate is highly soluble in water.

5 0
4 years ago
Box 1
Alex73 [517]

10g

Explanation:

Box 1, Mass of A = 10g

Box 2, Mass of B = 5g

Box 3, = 1A + 1B

Unknown:

Mass of B that would combine with mass of 20g of A

Solution:

   Mass ratio of A to B:

   \frac{mass of A}{mass of B} = mass ratio

           \frac{10}{5} = mass ratio

        The mass ratio of A to B = 2: 1

Now, number of B that will combine with 20g of A;

       

           \frac{mass of A}{mass of B} = mass ratio

               \frac{20}{mass of B} = \frac{2}{1}

                     Mass of B = 10g

10g of B would combine with 20g of A

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7 0
3 years ago
Read 2 more answers
The decomposition of in solution in carbon tetrachloride is a first-order reaction: The rate constant at a given temperature is
Elan Coil [88]

Answer:

see below

Explanation:

The rate constant is missing in question, but use C(final) = C(initial)e^-kt = 0.200M(e^-k·10). Fill in k and compute => remaining concentration of reactant

6 0
4 years ago
Read 2 more answers
A solution is made by dissolving 4.8 moles of salt in 1.6L of solution. What is the molarity
goldenfox [79]

Answer:

3M

Explanation:

moles ÷ liters = molarity

4.8 ÷ 1.6 = 3M

3 0
3 years ago
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