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katrin [286]
3 years ago
11

When wax is heated, it turns into a liquid. How are the wax molecules affected by this change of state?

Chemistry
2 answers:
stellarik [79]3 years ago
7 0

Explanation:

When wax is heated then the molecules of wax starts to move due to increase in temperature. As a result, force of attraction between the molecules will decrease and they will start to move from one place to another.

Due to heating, the wax molecules will start moving randomly. Hence, wax will convert into liquid state.

zzz [600]3 years ago
5 0
When it was solid, its molecules and atoms stuck in place and could not be moved, which is why it was a solid object. Now that it's a liquid, it's atoms and molecules are free flowing and a constantly move adapting to the environment or the container.
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Energy conversions _____. can lose energy as sound can be 100 percent efficient if controlled properly are calculated by multipl
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Answer:

are calculated by multiplying useful energy by the total amount of energy

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The energy conversions are never 100 percent efficient. This is because the energy originally is converted into a mixture of the useful and not useful energy. For example, gasoline in the car is converted to motion, sound and friction. The later two (sound and friction) are energies but are less useful. Thus, in this case, the energy conversion is not 100 % efficient. Thus, the energy efficiency equation comes into play. This is given as the ratio of the useful energy to the total energy. It is a fraction.  

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Assessment
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The atomic mass of an element is equal to the:
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number of protons and neutrons

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The activation barrier for the hydrolysis of sucrose into glucose and fructose is 108 kJ/mol. Part A If an enzyme increases the
emmasim [6.3K]

Answer:

The barrier has to be 34.23 kJ/mol lower when the sucrose is in the active site of the enzyme

Explanation:

From the given information:

The activation barrier for the hydrolysis of sucrose into glucose and fructose is 108 kJ/mol.

In this  same concentration for the glucose and fructose; the reaction rate can be calculated by the rate factor which can be illustrated from the Arrhenius equation;

Rate factor in the absence of catalyst:

k_1= A*e^{^{^{ \dfrac {- Ea_1}{RT}}

Rate factor in the presence of catalyst:

k_2= A*e^{^{^{ \dfrac {- Ea_2}{RT}}

Assuming the catalyzed reaction and the uncatalyzed reaction are  taking place at the same temperature :

Then;

the ratio of the rate factors can be expressed as:

\dfrac{k_2}{k_1}={  \dfrac {e^{ \dfrac {- Ea_2}{RT} }} { e^{ \dfrac {- Ea_1}{RT} }}

\dfrac{k_2}{k_1}={  \dfrac {e^{[  Ea_1 - Ea_2 ] }}{RT} }}

Thus;

Ea_1-Ea_2 = RT In \dfrac{k_2}{k_1}

Let say the assumed temperature = 25° C

= (25+ 273)K

= 298 K

Then ;

Ea_1-Ea_2 = 8.314 \  J/mol/K * 298 \ K *  In (10^6)

Ea_1-Ea_2 = 34228.92 \ J/mol

\mathbf{Ea_1-Ea_2 = 34.23 \ kJ/mol}

The barrier has to be 34.23 kJ/mol lower when the sucrose is in the active site of the enzyme

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True or false:The nucleus is the largest part of the atom and takes up most space
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