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do all the following listed on the second photo (bullet) to the nernst equation given. thank you
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- What is the Ksp of Zn3(PO4)2 (MW = 320.8 g/mol) if its solubility in water at 25 °C is 4.9 x 10-5 g/L? format for the scientifc notation 1.0 x 10^-1avg concentration: 8.937x10^-7A spectrophotometric method for the quantitative analysis of Pb2+ in blood has a normal calibration curve for which Sstd=(0.296 ppb−1)×Cstd+0.003. What is the concentration of Pb2+ in a sample of blood if Ssamp is 0.397?
- A titrimetric method for the determination of calcium in limestone was tested by analysis of an NIST limestone containing 30.15% CaO. The mean result of four analyses was 30.26% CaO, with a standard deviation of 0.085%. By pooling data from several analyses, it was established that s = 0.094% CaO.a. Do the data indicate the presence of a systematic error at the 95% confidence level?b. Do the data indicate the presence of systematic error at the 95% confidence level if no pooled value for s was available?You are developing a Ca detection method for a graphite furnace AA instrument. Your analysis of ten blank samples gives a standard deviation of 0.265 ppb. To establish your limit of detection (LOD), what concentration of Ca should be spiked into your blanks?(9.29 × 105/8)-20.81 = with correct sig figs
- Concentration=2.5 X 10^3 μM OD400nm=0.859 1cm cuvette is used what is the extinction coefficient (μM^-1 cm^-1)Calculate the [FeSCN2+] using volumes of stock solutions. Presume that all the SCN– ions react. STANDARD SAMPLE Volume of Fe(NO3)3 (mL) Volume of SCN- (mL) Volume of H2O (mL) [FeSCN2+] Absorbance 1 2.5 2.0 20.5 0.1918 2 2.5 1.5 21.0 0.3239 3 2.5 1.0 21.5 0.4965 4 2.5 0.5 22.0 0.6209 Stock [Fe(NO3)3] = 0.200 M, Stock [SCN-] = 0.0020 M Any help would be greatly appreciated Please and thanks :)Find (M) for [FeSCN^2+] using the following info: 0.200 M (Iron (III) nitrate) Fe(NO3)3 (mL) = 17.98 mL 0.00200 M (Potassium thiocyanate) KSCN (mL) = 1.97 mL 0.815 Absorbance
- In this experiment you will be preparing aqueous solutions of [Co(NH3)5N3]Cl2 at fixed concentrations. Given Mr ([Co(NH3)5N3]Cl2) = 257.01, what mass of [Co(NH3)5N3]Cl2 is required to prepare 10 mL of 0.0200 mol.dm-3 solution?Explain why Fe3+ is in large excess in the standardization procedure. Fe3+ + SCN- → FeNCS2+Elaborat ur answer pls thank u