you missed my point. I meant students that have not learned logarithms

you missed my point. I meant students that have not learned logarithms

所有跟贴·加跟贴·新语丝读书论坛

送交者: Amsel 于 2010-03-30, 10:34:39:

回答: Amsel 为什么你说让小学生算对数的平均值就没有意义？由 HHS 于 2010-03-30, 10:32:13:

cannot calculate pH of mixed acids.

瞎撤。实际上我不记得高中化学曾经说PH值是什么对数了 - HHS (176 bytes) 2010-03-30, 10:37:48 (427294)
- pH = - log10 (concentration of hydrogen cations in mol per liter) (无内容) - Amsel (0 bytes) 2010-03-30, 10:40:58 (427295)
  - 老师当浓度用了，就按浓度算嘛。 (无内容) - DW (0 bytes) 2010-03-30, 14:06:50 (427397)