HP 33s Scientific manual #@, @ @    ‘10 !@   # /  

–	 !	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