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. Weegy:
For the chemical reaction H2 CO2- H20 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 ... http://wiki.answers.com/Q/For_the_chemical_reaction_H2_CO2- H20_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_is_this_true
] Auto answered|Score .6131User:
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.Weegy:
... why changing concentration affects rates of reaction you ... of reaction. Reactants and products ... [ how fast the gaseous product is being formed. The reciprocal of the reaction ... www.scribd.com/doc/70496772/Reaction-Rates
] Auto answered|Score .6254User:
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.Auto answered|Score 1|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.Auto answered|Score 1|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
C. remains the same.
D. cannot be predicted. Weegy:
A.increasesAuto answered|Score .969|mythmoh|Points 5149|User:
What is the process in which an unstable atomic nucleus emits charged particles or energy or both?
D. none of the above Weegy:
The process is called radioactivity.Auto answered|Score .6|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 Note:
I'm sorry that that wasn't a good answer. Please hold on while I contact an expert.Weegy:
C. gamma decay is a type of nuclear decay that releases energy but not a particle.Expert answered|OxTornado007|Points 4838|Note:
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All Categories|No Subcategories|Expert answered|Rating 0| 6/22/2012 5:58:31 PM