Help Information

Using standard chemical notation (e.g. Al2/Al2(SO4)3*125), enter a stoichiometric calculation by clicking/touching the appropriate symbols and numbers. After completing the calculation entry, click/touch "ans" button or the calculation text window. The chemical calculator will calculate the answer and display it in the calculation text window. Use square brackets to force arithmetic operations (e.g. [[2+2]/3]). Normal parentheses are reserved for standard chemical formula notation. There is no fancy error catching. Illegal entries will simply produce a "Calculator Entry Error" message in the calculation text window. Click/touch "mem" to reenter a previous entry.

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Keyboard Text Entry

You can enter a calculation by using the keyboard. Type your calculation into the text field below and click/touch Accept Text Entry. If you do not change the text field, then the original calculation will be retained.

Accept Text Entry

Calculation Memory

Click a memory item to reload it in the calculation text window:

 

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iPad Browser App

The chemical calculator can be used as a browser App on any hand held device. On the iPad, a browser App icon for the calculator can be created by the following actions:

1. Load the calculator into the iPad Safari browser.
2. Touch the curved "send url" arrow to the left of the url address window.
3. Select "Add to Home Screen."
4. Type a name for your browser App in the resulting screen.
5. ouch the "Add" button.

That's it. The calculator now appears as a browser App icon.

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NIH/NCI Formula Search Input

Enter the name of a compound, and the calculator will query the NIH/NCI Resolver for the molecular formula. The formula will then be added to the calculator window.

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PubChem Formula Search Input

Enter the name of a compound, and the calculator will query the PubChem for the molecular formula. The formula will then be added to the calculator window.

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