The graph above plots gravitational force versus distance for two asteroids of equal mass (10 billion kg). When the distance bet
ween the asteroids is 9,000 km, the gravitational force between them is about 82 N.
Based on the trend shown in the graph, predict the force between the asteroids when the distance between them increases to 9,500 km.
A.
about 9,200 N
B.
about 90 N
C.
1,700 N
D.
about 74 N
Based on the trend shown in the graph, predict the force between the asteroids when the distance between them increases to 9,500 km.
A.
about 9,200 N
B.
about 90 N
C.
1,700 N
D.
about 74 N
2 answers:
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Answer: 22 kJ amount of energy is released in the following reaction.
Explanation: There are two types of reaction on the basis of amount of heat absorbed or released.
1. Endothermic reactions: These are the type of reactions in which reactants absorb heat to form the products. The energy of the reactants is less than the energy of the products.
2. Exothermic reactions: These are the type of reactions in which heat is released from the chemical reactions. The energy of the products is less than the reactants.
Sign convention for : This value is negative for exothermic reactions and positive for endothermic reactions.
For the given chemical reaction,
Energy of the products is less than the energy of the reactants, Hence, this reaction will be a type of exothermic reaction and energy will be released during this chemical change.
Amount of energy released = (350 - 372) kJ = -22kJ
Negative sign symbolizes the energy is being released. So, 22 kJ amount of energy is released in the following reaction.