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50. Solving a chemistry problem
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last one 23 days ago
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Uploaded: 31.01.2023
Content: 184.rar 15,32 kB
Refunds: 0
Uploaded: 31.01.2023
Content: 184.rar 15,32 kB
Product description
184. Two weighings of SiHCl3 weighing 10 g, one of which was injected with 0.0200 μg Ta2O5, decomposed HF, added rhodamine 6G, and extracted the formed ion associates [BH+][TaF6-] with benzene. The fluorescence intensity of the obtained extracts (Ix, Ix+Δ), as well as the extract of the control experiment (I0) was measured on a fluorimeter and the following results were obtained (c.u.): I0 = 4.0; ix = 16.0; Ix+Δ = 22.0. Calculate the mass fraction (ω,%) of Ta2O5 in SiHCl3.
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