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22 June, 15:00

Calculate the percentage by mass of lead in pbco3.

a. 17.96

b. 22.46

c. 73.05

d. 77.54

e. 89.22

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Answers (1)
  1. 22 June, 18:36
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    Pb/pbco3*100

    207/207+12+48

    207/267*100

    =77.53%
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