5. Using the data in Table 2, calculate the sample weight (approximate percentage of the substance being determined is given in brackets) required to obtain a certain amount of the gravimetric form.
Table 2.

Task No. Sample being studied Substance being determined Weight form
Formula Approximate content, % Formula Weight, g
1 2 3 4 5 6
5 MnCl2 MnCl2 20 AgCl 0.4

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