Final answer:
Signs that the mask isn't properly placed can include improved ventilation, bilateral chest rise, absence of breath sounds, and condensation in the mask.
Step-by-step explanation:
Signs that the mask isn't properly placed can include improved ventilation, bilateral chest rise, absence of breath sounds, and condensation in the mask. Improved ventilation suggests that air is able to escape from the mask, which indicates that it may not be properly sealed. Bilateral chest rise refers to both sides of the chest rising and falling symmetrically during breathing, which may not occur if the mask is obstructing proper airflow. Absence of breath sounds and condensation in the mask may indicate that the mask is not properly placed and is not allowing air to flow through as intended.