–

 !

Ends the program.

‡

) 

Cancels Program–entry mode.

Checksum and length of program: 36FF

21

Now calculate the change in pressure of the carbon dioxide if its temperature drops by 10 °C from the previous example.

Keys:

Display:

Description:

(In RPN mode)

 

 

IL

) 

WH

) 

P

#@

 

)

g@

)

g@

) 

g!@

 )

‘10 … !@  )g#

/

) 

LL …

.)

Stores previous pressure. Selects program “H.”

Selects variable P; prompts for V.Retains 2 in V; prompts for N.Retains .005 in N; prompts for R.Retains .0821 in R; prompts for T.Calculates new T.Stores 287.1 in T; solves for new P.

Calculates pressure change of the gas when temperature drops from

297.1K to 287.1 K (negative result indicates drop in pressure).

Solving and Integrating Programs 14–5