At –183° C, which of the following gases exists as a pale, bluish liquid that is slightly heavier than water?
a. Air c. Nitrous oxide
b. Oxygen d. Carbon dioxide
ANS: B
Oxygen is an elemental gas that is colorless, odorless, and tasteless at normal temperatures and pressures. It makes up 20.9% of the Earth's atmosphere by volume and 23.2% by weight. It con-stitutes approximately 50% of the Earth's crust by weight. Oxygen is slightly heavier than air, having a density of 1.326kg/m3 at 21.1° C and 760 mm Hg (specific gravity = 1.105). At temper-atures less than –183° C (–300° F), oxygen exists as a pale, bluish liquid that is slightly heavier than water.
You might also like to view...
When an ALS provider has completed intubating your 39-year-old patient, she then checks for proper tube placement by:
a. listening for sounds upon auscultation of the stomach. b. listening to either lung. c. seeing an equal, bilateral chest rise with each ventilation. d. noting that the colorimetric CO2 detector is yellow.
The inferior alveolar nerve is the largest branch of the anterior division of the mandibular nerve
A) True B) False