mastertrapper
29.05.2020 •
Physics
75 points!
In a particular chemical reaction, the energy of the reactants is 30 kJ and the energy of the products is 5 kJ. The maximum energy of the system is 40 kJ.
A. Sketch a potential energy diagram for this reaction. Make sure to label the energy of the reactants, the energy of the products, the activation energy, and the enthalpy change for the reaction.
B. What is the activation energy for this reaction?
C. What is the enthalpy change for this reaction?
D. Is this reaction endothermic or exothermic? Explain your answer in two ways: first, using the energy values, and second, by referring to the shape of the graph.
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Ответ:
30 kj in a big circle and the enegy products of 5 kj in smaller cicrlces around it
Explanation:
Im not sure how to explain it sorry
Ответ:
Mass of the object, m = 24.14 kg
Explanation:
It is given that,
Height above the ground, h = 2.4 m
Gravitational potential energy, PE = 568 J
We need to find the mass of the marble. The definition of gravitational potential energy is given by the product of mass, height and acceleration due to gravity. i.e.
PE = mgh
m = 24.14 kg
So, the mass of the object is 24.14 kg.