Causes of Retinal Hemorrhage. In adults, the causes of retinal hemorrhages are quite common and easy to understand. A forceful blow to the head can result in a retinal hemorrhage. Those who have been in an accident, been assaulted or have taken a fall in which they hit their head may experience a retinal hemorrhage.
Carbon monoxide is polar because oxygen is more electronegative than carbon giving oxygen a partila negative charge and carbon a partial positive charge. There is a net dipole moment.n the free carbon monoxide, a net negative charge Î´- remains at the carbon end and the molecule has a small dipole moment of 0.122 D The molecule is therefore asymmetric: oxygen has more electron density than carbon, and is also slightly positively charged compared to carbon being negative.
polar, nonpolar, you've spotted those adequately. The thing to remember now is that molecules don't know they're polar or nonpolar, those are just names we come up with to describe our observations. In the case of ethanol, it has a polar bit and a non polar bit- the 'anol' vs the 'eth'. In this molecule, the carbon end is nonpolar enough to drag the polar end into the tolune, and vice versa, the polar end is polar enough as to drag the nonpolar end into water, which is why alcohol mixes with water.