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求助:这几样放一起为啥不溶?
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求助:这几样放一起为啥不溶?# Chemistry - 化学
p*8
1
please recommend a sunglass for man around $100. Thank you!
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n*g
2
请教宫颈癌癌前病变的药和治疗方法。多谢
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o*l
3
CBOX。其实比多数网文好一千倍。
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o*n
4
有个培养基,要求这些东西:
(1) The trace elements (10 mg H3BO3, 11.19 mg MnSO4 · H2O, 124.6 mg ZnSO4
· 7H2O, 78.22 mg CuSO4 · 5H2O, and 10 mg MoO3) are dissolved in 100 ml
sterile distilled water and then stored in the refrigerator for up to
several months;
前几样都能溶,加了Mo后,一直有白色粉末(沉淀?)在烧杯底部,加温,延长时间都
不行。
(2) FeSO4 · 7H2O (100 mg) is dissolved in 10 ml sterile distilled water and
is stored in the refrigerator for up to several months;
这个还好
(3) All of the other ingredients including 4.0 g KH2PO4, 6.0 g Na2HPO4, 0.
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b*n
5

and

【在 o******n 的大作中提到】
: 有个培养基,要求这些东西:
: (1) The trace elements (10 mg H3BO3, 11.19 mg MnSO4 · H2O, 124.6 mg ZnSO4
: · 7H2O, 78.22 mg CuSO4 · 5H2O, and 10 mg MoO3) are dissolved in 100 ml
: sterile distilled water and then stored in the refrigerator for up to
: several months;
: 前几样都能溶,加了Mo后,一直有白色粉末(沉淀?)在烧杯底部,加温,延长时间都
: 不行。
: (2) FeSO4 · 7H2O (100 mg) is dissolved in 10 ml sterile distilled water and
: is stored in the refrigerator for up to several months;
: 这个还好

avatar
b*n
6
先加一样, 然后调pH, 然后再加下一样,看看是不是有效。

and

【在 o******n 的大作中提到】
: 有个培养基,要求这些东西:
: (1) The trace elements (10 mg H3BO3, 11.19 mg MnSO4 · H2O, 124.6 mg ZnSO4
: · 7H2O, 78.22 mg CuSO4 · 5H2O, and 10 mg MoO3) are dissolved in 100 ml
: sterile distilled water and then stored in the refrigerator for up to
: several months;
: 前几样都能溶,加了Mo后,一直有白色粉末(沉淀?)在烧杯底部,加温,延长时间都
: 不行。
: (2) FeSO4 · 7H2O (100 mg) is dissolved in 10 ml sterile distilled water and
: is stored in the refrigerator for up to several months;
: 这个还好

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