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3 years ago

Newtons law of motion

1 answer:

6 0

The laws are: (1) Every object moves in a straight line unless acted upon by a force. (2) The acceleration of an object is directly proportional to the net force exerted and inversely proportional to the object's mass. (3) For every action, there is an equal and opposite reaction.

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Which system uses a liquid organic compound with a lower boiling point than water to generate electricity?

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The law of ____ states that traits are passed from parents to offspring independently of one another.

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Independent Assortment

Explanation:

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How do computer’s play a role in meteorology? Check all that apply.

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They use equations to predict future weather.

They collect data from weather stations.

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A nurse places a client with severe burns on a circulating air bed. what is the primary reason why the nurse implements this act

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The reason why the nurse implemented this method is to ease the pain of the patient. Because of the severe burn, any concentrated pressure on any part of the damage skin will be very painful to the patient. Thus, the major function of the circulating air bed is to distribute the weight of the patient uniformly so that no single contact point with the bed will press harder than any other.

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3 years ago

If a chemical reaction is reversed, what happens to the enthalpy of the reaction?

nataly862011 [7]

Answer: C. The sign of the enthalpy of the reaction reverses.

Explanation: Enthalpy of a reaction is the net heat absorbed or released during a chemical reaction.It is represented by $\Delta H$ . It is negative for exothermic reactions in which heat is released and is positive for endothermic reactions in which heat is absorbed.

When a chemical reaction is reversed the heat of the reaction changes its sign.

$CaCO_3\rightarrow CaO+CO_2$ $\Delta H=+ve$

The decomposition of calcium carbonate is an endothermic reaction as heat is required to break the bonds and thus energy is absorbed.

$CaO+CO_2\rightarrow CaCO_3$ $\Delta H=-ve$

When the reaction is reversed, the reaction becomes exothermic as now bonds are getting formed and energy is released.

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