Uncertainty Calculator
Evaluate an Equation
Help
Type in your equation at the "Equation:" prompt.
Input follows "BASIC" type rules:
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Exponentiation is indicated by ^ or **.
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LOG() is base 10, LNe() is base e.
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Allowed functions are ATN, COS, EXP, LNe, LOG, SIN, SQR, TAN.
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Variables are one or two characters, e.g. I, X, df, X7.
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Nested parentheses are useful, e.g. ((X+Y)*Z).
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No implicit multiplication, e.g. ((X+Y)Z) is not allowed.
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Variables are not case sensitive: x=X.
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Scientific notation: 1.23x10-3 is written as 1.23E-3.
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Enter your equation without an "=" sign.
-----Example: -----
To evaluate K2, knowing K1, H, R, T2,and T1
in the equation:
ln(K2/K1) = - H/R( 1/T2 - 1/T1)
Solve for K2.
You would then enter Equation: K1*EXP(-H/R*(1/T2-1/T1))
Colby College Chemistry, T. W. Shattuck