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3 years ago

Ice cubes are placed on a table in a warm room. What happens to the ice particles?

Chemistry

1 answer:

Zinaida [17]3 years ago

7 0

Explanation:

I rember when I learned this in 3rd grade

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c. The reaction Br2 (l) --> Br2 (g) has ΔH = 30.91 kJ/mol and ΔS = 93.3 J/mol·K. Use this information to show (within close a

egoroff_w [7]

Answer:

The answer to your question is given below.

Explanation:

From the question given above, the following data were obtained:

Br₂ (l) —> Br₂(g)

Enthalpy change (ΔH) = 30.91 KJ/mol

Entropy change (ΔS) = 93.3 J/mol·K

Boiling temperature (T) =?

Next, we shall convert 30.91 KJ/mol to J/mol. This can be obtained as follow:

1 KJ/mol = 1000 J/mol

Therefore,

30.91 KJ/mol = 30.91 × 1000

30.91 KJ/mol = 30910 J/mol

Thus, 30.91 KJ/mol is equivalent to 30910 J/mol.

Finally, we shall determine the boiling temperature of bromine. This can be obtained as follow:

Enthalpy change (ΔH) = 30910 J/mol

Entropy change (ΔS) = 93.3 J/mol·K

Boiling temperature (T) =?

ΔS = ΔH / T

93.3 = 30910 / T

Cross multiply

93.3 × T = 30910

Divide both side by 93.3

T = 30910 / 93.3

T = 331.29 K

Thus, the boiling temperature of bromine is 331.29 K

6 0

3 years ago

Which of those is a balanced chemical equation? (super important)

alexgriva [62]

I believe C is the balanced equation.

7 0

3 years ago

Read 2 more answers

How many joules of kinetic energy does the pendulum have when it has 50 J of potential energy?

dalvyx [7]

Answer:

...

Explanation:

4 0

3 years ago

The likelihood that a chemical molecule will be reduced is called the

podryga [215]

Answer: The correct answer is standard reduction potential

Explanation:

Oxidation reaction is defined as the reaction in which an atom looses its electrons. The oxidation number of the atom gets increased during this reaction.

$X\rightarrow X^{n+}+ne^-$

Reduction reaction is defined as the reaction in which an atom gains electrons. The oxidation number of the atom gets reduced during this reaction.

$X^{n+}+ne^-\rightarrow X$

Standard reduction potential is defined as the tendency of a chemical substance to get reduced. It is denoted as $E^o$

The substance having highest positive $E^o$ potential will always get reduced and will undergo reduction reaction.

Hence, the correct answer is standard reduction potential

5 0

3 years ago

Nonmetals are excellent conductors of heat and electricity. a. True b. False

weeeeeb [17]

It's False.
Only metals can be conductors of heat and electricity.

4 0

3 years ago