E. solid copper sulfide and silver nitrate react to form copper (ii) nitrate and solid silver sulfide. write a balanced chemical
2 answers:
Answer:
The given reaction is not a redox reaction.
Explanation:
Redox reaction is defined as chemical reaction in oxidation and reduction reactions occurs simultaneously.
Oxidation reaction is defined as the reaction in which an atom looses its electrons. Here, oxidation state of the atom increases.
Reduction reaction is defined as the reaction in which an atom gains electrons. Here, oxidation state of the atom decreases.
Solid copper sulfide when immersed in silver nitrate solution it reacts to form silver sulfide precipitate and copper(II) nitrate solution.
Oxidation states of elements on reactant side:
Oxidation state of copper = +2
Oxidation state of sulfur = -2
Oxidation number of silver +1
Oxidation number of nitrogen = +5
Oxidation number of oxygen = -2
Oxidation states of elements on product side:
Oxidation state of copper = +2
Oxidation state of sulfur = -2
Oxidation number of silver +1
Oxidation number of nitrogen = +5
Oxidation number of oxygen = -2
No change in oxidation states of elements is observed which means that the given reaction is not a redox reaction.
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Answer:
Kinetic energy is directly proportional to mass
Explanation:
Kinetic energy is directly proportional to the mass of an object and also directly proportional to the square of the velocity of that object:
Notice that if we keep velocity constant and only increase the mass of a object, the kinetic energy of that object would increase, as we've already emphasized the direct relationship between the kinetic energy term and the mass term.
Let's take a simple example: assume that object 1 and object 2 are both moving at the same velocity but object 1 has a much lower mass than object 2. According to the equation, object 1 has lower kinetic energy. This object can then transform all of its kinetic energy into some other form, say, heat the ground. The heat transferred will be significantly lower than by the object 2 moving at the same velocity but having a much greater mass.