If the rate of a particular reaction is 4 ties faster at 373k that it was at 323k what is the activation energy for the reaction

27.77 kJ/mol is the activation energy for the reaction.

Explanation:

Rate of the reaction at 323 K =

Rate of the reaction at 373 K =

Activation energy for the reaction is calculated by formula:

= Activation energy

= Temperature when rate of the reaction was

= Temperature when rate of the reaction was

Substituting the values:

27.77 kJ/mol is the activation energy for the reaction.

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

the solar system used to have much dust particles option no d