79. Solving a chemistry problem
Seller: Derkach
Price: 1.19 USD
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Product description
- Determine at what distance in the spectrum of the analyzed sample the cobalt line λх=345.85 nm should be from the vanadium line λ2=318.40, if the distance from it to the other vanadium line λ2=436.92 on the spectroprojector screen is 55 mm.
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