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When the forward and reverse paths of a change occur at the same rate, A. the system is conserved. B. the system is in equilibrium. C. the change must be physical. D. the change must be
chemical.
B. the system is in equilibrium. hen the forward and reverse paths of a change occur at the same rate, the system is in equilibrium.
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Original conversation
User: For the chemical reaction H2 + CO2 ? H2O + CO, the energy contained in the reactants is 352 kJ, and the energy contained in the products is 394 kJ, assuming 1 mol of each substance is present. Which of the following statements is true? A. 42 kJ is released, and the reaction is exothermic. B. 42 kJ is released, and the reaction is endothermic. C. 42 kJ is absorbed, and the reaction is exothermic. D. 42 kJ is absorbed, and the reaction is endothermic.

User: Reaction rates do NOT tell you how fast A. reactants are being consumed. B. products are being formed. C. substances are changing state. D. energy is being absorbed or released.

User: When the forward and reverse paths of a change occur at the same rate, A. the system is conserved. B. the system is in equilibrium. C. the change must be physical. D. the change must be chemical.

Weegy: B. the system is in equilibrium. hen the forward and reverse paths of a change occur at the same rate, the system is in equilibrium.
eturker|Points 2245|

User: The equation 2NO2 « N2O4 shows a system A. in chemical equilibrium. B. in physical equilibrium. C. that does not reach equilibrium. D. that does not change.

Weegy: a. in chemical equilibrium.
Fanboy|Points 1961|

User: Which of the following takes place during a redox reaction? A. Electrons are gained only. B. Electrons are lost only. C. Electrons are both gained and lost. D. Electrons are neither gained nor lost.

User: In general, if the temperature of a chemical reaction is increased, the reaction rate A. increases. B. decreases. C. remains the same. D. cannot be predicted.

Weegy: A.increases
mythmoh|Points 5149|

User: What is the process in which an unstable atomic nucleus emits charged particles or energy or both? A. radioactivity B. oxidation C. decomposition D. none of the above

Weegy: The process is called radioactivity.
interpersonal1|Points 60|

User: What type of nuclear decay releases energy but not a particle? A. alpha decay B. beta decay C. gamma decay D. electron decay



Weegy: C. gamma decay is a type of nuclear decay that releases energy but not a particle.
Expert answered|OxTornado007|Points 4838|



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Asked 6/22/2012 5:58:31 PM
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