我怎么算的是5kg啊Both man and woman need 150 mg of iodine (碘) per day.If a brand of table salt contains 0.005% by mass of potassium iodate (KIO3),how much this salt contains the necessary daily amount of iodine for a person?A.0.05gB.0.5gC.5g

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我怎么算的是5kg啊Bothmanandwomanneed150mgofiodine(碘)perday.Ifabrandoftablesaltcontains0.005%bymassofpotassi

我怎么算的是5kg啊Both man and woman need 150 mg of iodine (碘) per day.If a brand of table salt contains 0.005% by mass of potassium iodate (KIO3),how much this salt contains the necessary daily amount of iodine for a person?A.0.05gB.0.5gC.5g
我怎么算的是5kg啊
Both man and woman need 150 mg of iodine (碘) per day.If a brand of table salt contains 0.005% by mass of potassium iodate (KIO3),how much this salt contains the necessary daily amount of iodine for a person?
A.0.05g
B.0.5g
C.5g
D.0.05kg
E.0.5kg

我怎么算的是5kg啊Both man and woman need 150 mg of iodine (碘) per day.If a brand of table salt contains 0.005% by mass of potassium iodate (KIO3),how much this salt contains the necessary daily amount of iodine for a person?A.0.05gB.0.5gC.5g
KIO3 - I
214 127
X 150mg
X=150/127 * 214 = 253 mg
253mg/ 0.005%= 5*10^6 mg = 5Kg
就是5KG,要不你的题目打错了

150mg=0.15g KIO3中I的质量分数127/(127+39+3*16) *100% =59.3458%
则所需KIO3=0.15/59.3458%
进而所需的盐=0.15/59.3458%/0.005%=5.055kg

你题目有没有错啊?

数据有疑问

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