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2 years ago

In a decomposition reaction involving a gaseous product, what must be done for the reaction to reach equilibrium?

Chemistry

1 answer:

Vadim26 [7]2 years ago

8 0

To prevent the gaseous product from escaping, the system must be sealed.

<h3>What are equilibrium and an example?</h3>

Equilibrium is characterized as a state of equilibrium or a stable situation in which conflicting forces balance one another out and no changes are taking place. In terms of economics, equilibrium occurs when supply and demand are equal. When you are composed and steady, you are in an equilibrium state.

<h3>What three types of equilibrium are there?</h3>

Equilibrium can be classified as either stable, unstable, or neutral.

<h3>Which four variables have an impact on equilibrium?</h3>

Equilibrium is influenced by the system's temperature, pressure, and concentration.
When one of these variables changes, the system's equilibrium is upset and it readjusts itself until it reaches equilibrium again.

learn more about equilibrium here

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How many KJ are given off when 120 grams of water are cooled from 25°C to -25°C?

Pavel [41]

-25.116 Kilojoules are given off when 120 grams of water are cooled from 25°C to -25°C.

Explanation:

GIVEN THAT:

mass of water = 120 grams OR 0.12 Kg

initial temperature = 25 degrees

final temperature = -25degrees

change in temperature (ΔT) = final temperature - initial temperature

-25 -25

= -50 degrees

specific heat capacity of water = 4.186 joule/gram degree Celsius

Q (heat energy transferred) = ?

Formula used,

Q = mcΔT

Putting the values in equation

Q = 120 X 4.186 X -50

= -25116 joules

The energy in joules is converted to kilo joule by dividing it with 1000.

The negative sign in the energy transfer shows that energy is released in the process.

4 0

3 years ago

Kamal was told by his mother to pour water through a thin cloth into another container to further purify the water.

Galina-37 [17]

<h2> $\large{\underbrace{\underline{\color{magenta}{\bf{ANSWER}}}}}$ </h2><h2 /><h2 />

a].When sand is added to water it either hangs in the water or forms a layer at the bottom of the container. Sand therefore does not dissolve in water and is insoluble. It is easy to separate sand and water by filtering the mixture.

b]. The water filtered by kamal is not safe to drink .

If you run out of water, or cannot carry enough water with you for your entire trip, you may need to source drinking water from natural water sources.

5 0

3 years ago

How many electrons does ga lose to achive noble gas arrangement?

Alchen [17]

Gallium has 31 electrons (₃₁Ga 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p¹) and if loses 13 electrons, gallium would have configuration of noble gas argon with 18 electrons (₁₈Ar 1s² 2s² 2p⁶ 3s² 3p⁶), but that is not possible, so gallium only loses three electrons and has electron configuration:
₃₁Ga³⁺ 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰.

3 0

3 years ago

In the Energy and Specific Heat lab, what temperature should be recorded as the final temperature of the water when measuring th

Anon25 [30]

Answer:

B. The temperature of the water when the food sample has finished burning completely.

Explanation:

Heat or thermal energy is a form of energy that transfers from one object to another due to a temperature difference between the objects. The units for heat are joules or calories.

Calorimetry is the measurement of heat energy released or absorbed in a chemical reaction. A calorimeter is used in calorimetry. The calorimeter operates on the Law of Conservation of Energy which states that energy is never created or destroyed but is transformed from one form to another or between objects.

In food calorimetry, the energy released when food is burned is measured by recording the rise in temperature of water in a calorimeter when a given mass of a food sample is burned completely.

Energy can be calculated using the formula: Q = mc ∆T

where Q = the energy in joules or calories, m = the mass in grams, c = specific heat and ∆T = the change in temperature (final temperature - initial temperature).

The temperature of the water when the food sample has finished burning completely is taken as the final temperature of the water. The sample is allowed to smolder for sometime before recording the final water temperature. This is because the water temperature will continue to rise after the flame has gone out.

6 0

3 years ago

The table shows the thermodynamic data for a reaction. Thermodynamic Data Energy of the Reactants Energy of the Products Activat

NNADVOKAT [17]

Answer:

The change in enthalpy is +210 kJ, so it is an endothermic reaction.

Explanation:

The change in enthalpy shows that the reaction is exothermic or endothermic.

The change in enthalpy = The energy of products - the energy of reactants.

If ΔH is positive value, the reaction is endothermic, the energy of the products is higher than that of the reactants.

If ΔH is negative value, the reaction is exothermic, the energy of the products is lower than that of the reactants.

For this reaction: The change in enthalpy = The energy of products - the energy of reactants = 370 kJ - 160 kJ = + 210 kJ.

So, the right choice is: The change in enthalpy is +210 kJ, so it is an endothermic reaction.

7 0

3 years ago

Read 2 more answers