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A calibration curve was established for the determination of thiocyanate ions in urine. Twenty-five replicate determinations of the blank yielded a standard deviation of 1.85 response units. The slope of the calibration curve was 18.67 response unit per uM thocyanate. What is the minimum detectable concentration of thiocyanate for this method? And what is the limit of quanititation for thiocyanate by this method?
A graduated cylinder contains 31.0 of water. What is the new water level after 38.0 of silver metal is submerged in the water?
If a solution containing 17.76 g of mercury(II) perchlorate is allowed to react completely with a solution containing 5.102 g of sodium sulfate, how many grams of solid precipitate will be formed.
Why do Br And I interfere with the NO3 test? Explain fully using bromide as an example, including equations. 3. Explain why an excess of Fe2+ is necessary for the NO3 test.
If the surface area of a human body is 16,100 square centimeters, what is the total weight of the atmosphere on a human body
What is the net redox reaction that occurs when Pt comes into contact with acidic KMnO4
The solubility of the ionic compound M2X3, having a molar mass of 238 g/mol, is 2.89 10-7 g/L. Calculate the Ksp of the compound
Assuming that these species remain gaseous at 119K , for which species is the equipartition theorem prediction for the rotational contribution to the internal energy appropriate?
Calculate the pH of the buffer if 10 drops of 0.1mol/L of NaCH3COO is added to 10 drops of 0.1 mol/L of CH3COOH. Equations useful to obtain the solution
The equilibrium concentration of HA will be less than the stoichiometric concentration because some or all of HA ionizes.
A radio station broadcasts at a frequency of 101.3 MHz. (1 mHz = 10^6Hz). What is the wavelength and energy of this radiation
If the vapor pressure of ethyl ether and ethyl alcohol at 20°C are 375 torr and 20.0 torr, respectively, the vapor pressure of the solution at 20°C
Discuss how to find the molar mass of a compound, percent composition of the elements of a compound and how to determine the empirical and molecular formulas from percent composition.
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