Molecules will try to adopt the most stable conformation that minimizes strain. For cyclohexane, C 6 H 12, this would be the chair conformation. Letâs see why. If cyclohexane was planar, its structure would look like the picture to the left.
CPAP mask â There are many types of C-PAP masks. There are masks that just cover the nose (nasal cpap mask), and masks that cover just the mouth (oral masks), and of course, nasal-oral masks. There are also masks that are attached to oral appliance mouth devices.
Continuous positive airway pressure (CPAP) therapy is a common treatment for obstructive sleep apnea. It includes a small machine that supplies a constant and steady air pressure, a hose, and a mask or nose piece. Common problems with CPAP include a leaky mask, trouble falling asleep, and a dry mouth or nose. The good news is that if one CPAP mask or device doesn't work for you, you have other options. And most CPAP masks are adjustable, to help make them more comfortable for you.