There should be no air bubbles, as a bubble bursting can affect the volume measurement and disrupt the accuracy of the experiment.
It looks like you have to watch the videos linked (i think you need to click on the names of animals). for each video, right down the traits and functions of the animal.
No, they don't. In aromatic carbons, the electrons flow constantly, causing the electron density to have uniformly distributed. while in cyclic alkenes is the contrary, the electrons do not flow throughout the molecule and the electron density is not uniformly distributed.
The correct answer is B,
<span>It is endothermic, with both positive enthalpy and entropy changes.</span>
Answer:
Water is a compound and not a mixture. The reasons are the following:
1) It is held tightly through bonds called chemical bonds which is the characteristic of compound and not mixture.
2) It cannot be separated by physical means but can be separated by chemical means.
