Answer:
Potassium iodide increases the decomposition rate of hydrogen peroxide.
Explanation:
Potassium iodide increases the decomposition rate of hydrogen peroxide because potassium iodide act as a catalyst. A catalyst speed up the process of chemical reaction without reacting with the molecules present in reaction. If the potassium iodide is not present as a catalyst for the decomposition of hydrogen peroxide then the decomposition of hydrogen peroxide takes too much time because the catalyst is absent that speed up the reaction.
They are odourless, colourless monatomic gases with full outer shells
Most often, electrons are transferred from the metal atoms to the nonmetal atoms. Some other reactions are possible, such as the reaction between some metal cations and compounds of nonmetals, such as carbon monoxide, to form coordinate covalent bonds.
Kinetic energy of an object can be expressed in terms of its mass m and velocity v as:
KE = 1/2 * m* v²
Thus higher the velocity, greater will be the Kinetic energy. Now, as the box moves along a ramp from top to bottom, its velocity increases and so does the KE. Hence, kinetic energy is maximum at the bottom
Ans B) at the bottom
Extensive properties such as mass and Volume depend on the amount of matter being measured.
Intensive properties such as density and color do not depend on the amount of the substance present,
Physical properties can be measured without changing a substance's chemical identity.
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