Later I heard that the price of an eye exam at target optical may vary from $29 to $229. So I think this may be the reason that why I can't find the price on the internet. if you want to have an eye exam at target optical, I strongly suggest you to make a call to know the exact price for en eye exam in that store.
Water does not commonly form a gas, but rather a vapor which is slightly different (but really just the name of a gas that is normally a liquid). - There is latent heat in water so you can remove energy without changing the temperature of the water (only exactly at a phase change though).
The melting point of water is not always the same as the freezing point of water! Here is a look at the melting point of water and why it changes. Answer: The melting point of water is the temperature at which it changes from solid ice into liquid water. The solid and liquid phase of water are in equilibrium at this temperature.