HP 35s Scientific Calculator User Manual

Page 126

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7-4

Solving Equations

Example:

Solving the Ideal Gas Law Equation.

The Ideal Gas Law describes the relationship between pressure, volume,
temperature, and the amount (moles) of an ideal gas:

P

× V = N × R × T

where P is pressure (in atmospheres or N/m

2

), V is volume (in liters), N is the

number of moles of gas, R is the universal gas constant (0.0821 liter–atm/mole–K
or 8.314 J/mole–K), and T is temperature (Kelvins: K=°C + 273.1).

Enter the equation:

Keys:

Display:

Description:



Displays the equation.






Solves for T; prompts for
D.





Stores 500 in D; prompts
for V.




Retains 0 in V; prompts
for G.





Retains 9.8 in G; solves
for T.

Keys:

Display:

Description:

P

_

Selects Equation mode
and starts the equation.







_



Terminates and displays
the equation.






Checksum and length.

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