水的特質 Water Quality

2007-07-23 4:40 am
我想要答案同步驟
1.What is the final concentration of the solution formed when 20 mL of 0.25 M silver nitrate is added to 35 mL of 0.30 M silver nitrate?
2.If the concentration of lead in a dozen oysters is 2.1 ppm, how many milligrams of lead would be present in a 1.6 g serving?

回答 (1)

2007-07-23 5:34 am
✔ 最佳答案
1. MV = M1V1+M2V2
M (35+20) = (35)(0.3) + (20)(0.25)
M = 0.282 M
參考: ME 我


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