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Help me reproduce the problem
For a calculation or formula issue, include the chemical formula exactly as entered, the mass or mole amount, your selected units, and the result you expected. If you used a custom molar mass, include that value too. A source for a proposed correction is particularly useful.
For a display or accessibility problem, tell me which browser and device you used and which control or page caused trouble. Please leave confidential research, personal information, and other sensitive material out of examples or screenshots.
What this inbox is for
I maintain the website and its calculator. I can investigate tool behavior, but this inbox is not a source of laboratory procedures, material safety advice, or answers that require knowledge of your sample.
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