ข้อคิดเห็นที่
1:
Ans 1 :
1 ppm ( Part per Million ) = 1 / 1,000,000
100 ppm ( Weight By Weight ) = 100 mg / 1,000,000 mg [ Equation 1A ]
100 ppm ( Weight By Volume ) = 100 mg / 1,000,000 Microliter = 100 mg / 1 Liter [ Equation 1B ]
If you have only 10 mg of Beta - Carotene
By [ Equation 1A ]
Maximum amount of Solution = 1,000,000 mg x ( 10 mg / 100 mg ) = 100,000 mg
By [ Equation 1B ]
Maximum amount of Solution = 1.0 L x ( 10 mg / 100 mg ) = 0.1 L
Ans 2 : ( A )
Add more Hexane until Total Weight of Solution is 100,000 mg . ( Final solution will have 10 mg of Beta - Carotene per 100,000 mg of Solution )
Ans 2 : ( B )
Add more Hexane until Total Volume of Solution is 100 mL . ( Final solution will have 10 mg of Beta - Carotene per 100 mL of Solution )
โดย:
Ben-10@coldmail.com
[23 ก.ย. 2554 13:36]
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