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ToolboxGraphPad GraphPad
builds a simple graph from your laboratory data and emailsa GIF file
to you for inclusion in your reports or Web pages. Simple linear regression
is included. Popup
Periodic Table This simple periodic table was designed to
be used as a very quick popup reference on cgi-based chemistry tests,
not as a comprehensive element database. Most of the excellent (but
cyclopean) periodic tables now on the Web require a client-server dialog
every time the user requests an atomic weight. Being JavaScript, this
table executes entirely on your browser. That takes a load off your
server when you are testing very large classes — and a client-side
table works even when you're offline. The table is sized to fit a default
browser window comfortably. Gas
Law Calculator This script solves the ideal gas, van der Waals,
and Dieterici equations of state for pressure, volume, temperature,
or moles in a variety of convenient units. Semiempirical parameters
are computed from critical point data — a database of common gases
is included in the script, but you can input your own critical point
data if you wish. The Boyle temperature and the critical compressibility
factor are computed for the semiempirical equations, as well. Water
Vapor Pressure Oxygen Solubility Calculator A quick DO calculator
based on empirical functions for oxygen solubility taken from Standard
Methods for Waste and Wastewater Analysis. Enter the barometric pressure
in torr, and the water temperature in °C. Hit the Calculate button
to see the saturated water vapor pressure and the
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