An air mass that originates in the pacific ocean west of brazil is most likely what

Warm and wet

Explanation:

Air masses are large portions of air that have relatively homogeneous internal temperature, pressure and humidity conditions, influenced by the region where they are formed. The place of formation of the air mass is called the region of origin, this is where the air mass will acquire its characteristics of temperature, pressure and humidity. Therefore, an air mass originating from western Brazil, will have common characteristics of a tropical region, that is, this air mass will be wet and have a high temperature.

For this reason, we can guarantee that an air mass that originates in the Pacific Ocean west of Brazil is likely to be warm and wet.

not sure if this what   you'r looking for would be percent composition

hypoxemia refers to a below usual concentration of oxygen in the blood, mainly in the arteries. hypoxemia is an indication of an issue associated with circulation or breathing and may lead to various symptoms like shortness of breath.  

the condition is identified by determining the level of oxygen in the blood sample obtained from an artery. it can also be predicted by determining the oxygen saturation of the blood with the application of a pulse oximeter.  

the normal arterial oxygen is about 75 to 100 mm hg. the values underneath 60 mm hg is generally considered with the requirement for supplemental oxygen. the normal pulse oximeter readings generally range between 95 to 100 percent. the values under 90 percent are regarded as low.  

in the given case, the oxygen saturation is measured at 93 percent, hence, there is no need to administer oxygen, that is, one should withhold oxygen.