Answer:
Ea = 35 kJ.
Explanation:
Activation energy (Ea) is the difference between the potential energy of intermediate "activated complex/ peak" and reactants.
Ea = P.E. of products - P.E. of reactants = 65 kJ - 30 kJ = 35 kJ.
kindly find the attached image.
Answer:
When Iron powder and Sulfur powder are mixed, no chemical reaction will occur, so you will see a physical change. The heterogeneous mixture resulting from mixing Iron powder with Sulfur powder could be easily separated using a magnet. When heating both compounds; however, it is possible to observe a chemical change as Iron Sulfide is formed. This product looks dark, shiny and is solid.
Answer:
The structure for 2 brormocyclopentan amine is given in attached file.
Explanation:
2-bromocyclopentamine (Figure attached) is a synthetic compound which is synthesized by substitution reaction of cyclopentamine and hydrobromide. Its molecular formula and molecular mass are C5H10NBr and 164.05 g/mol respectively. It is a very reactive compound so it doesn’t available in pure form, it is present in market as a mixture of 2-bromocyclopentamine and Hydrobromide.
Properties:
Its boiling point is 115 °C.
Its melting point is -75 °C.
It is highly flammable.
It is highly toxic.
It is irritant.
It is corrosive in nature.
Which statement describes this reaction?
( I) Bonds are broken, and the reaction is endothermic.
(2) Bonds are broken , and the reaction is exothermic.
(3) Bonds are formed, and the reaction is endothermic.
(4) Bonds are formed, and the reaction is exothermic.
Answer: Option (1) is the correct answer.
Explanation:
In a molecule, the nitrogen atoms are bonded together by triple bond.
Therefore, in order to break this triple bond high heat or energy has to be provided.
Thus, the reaction shows that N triple bond N is broken down as energy is absorbed by molecule.
Hence, we can conclude that in the given reaction bonds are broken, and the reaction is endothermic.
B.chalk can be broken into pieces
C. Chalk is white
D. Chalk will bubble in vinegar