17. Решение задачи по химии №001 792

143. Determine the mass fraction (%) of copper in aluminum, if the following results were obtained during photometry using the method of three standards:
Parameter Reference Analyzed sample
1 2 3
ω(Cu), % 0.25 0.80 1.20 ?
S(Cu) 0.25 0.54 0.61 0.40
S(Al) 0.42 0.44 0.41 0.46

If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.