The measured dipole moment of BrCH₂CH₂Br is 1.0 D. Which one of the following statements about 1,2−dibromoethane is false?
A. It may exist entirely in the anti conformation.
B. It may exist as a mixture of anti and gauche conformations.
C. It may exist entirely in the gauche conformation.

A. It may exist entirely in the anti conformation.

Explanation:

It is false

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.