Occupational Safety and Health Administration's (OSHA's) permissible exposure limit (PEL) for acetic anhydride is 5 ppm in air and the immediate danger to life and health (IDLH) value is 200 ppm in air. Such vapor concentrations can be determined by dividing the vapor pressure by 760 mmHg and then multiplying by 106 (VP/760 x 106). Calculate the vapor concentration at 20 ∘C and 50 ∘C.

At    

At    

Explanation:

From the question we are told that

 The permissible exposure limit (PEL) for acetic anhydride is  

  The  exposure that is of immediate danger to life and health

Gnerally the vapor  pressure of acetic anhydride at is  

Now converting to ppm from the description in the question

Gnerally the vapor  pressure of acetic anhydride at is    

Now converting to ppm from the description in the question

Note this vapor pressure are constant values

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.

i think slash and