Cheryl Walcutt

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  • in reply to: Dollar signs and hyphens #33680

    Cheryl Walcutt
    Participant

    The hyphen and negative sign in nemeth is the same.  How does the reader determine which sign is being used.

    For example (problem taken from the online NFB  provisional lesson 2):  Plants thrive in soil that measure from 5.5-7.0 on the pH scale.

    Taken in context I would know it was a hyphen, but other examples may not be as clear.

    Thanks for your insight 🙂

    in reply to: Thermochemical equations UEB NEM CHEM #32945

    Cheryl Walcutt
    Participant

    Can you provide a sum braille sample of the following thermochemistry example.  We have two different braille books that show the delta H differently (456, 145, 6, 125 or 46, 6, 125), the first way is notated as enthalpy.

    ΔHvap = m(2259 J/g)
    ΔHfus = m(334 J/g)

     

    Thanks!

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