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Calculate the conditional formation constant Kf for the formation of an EDTA complex with copper (II) at a pH of 5.00, if log Kf= 18.80
Which of the following pairs of molecules is listed in order of decreasing net dipole moment (from more polar molecule to less polar molecule)? A. CCl4 > SCl4 B. CH2Cl2 > CCl2Br2 C. SF6 > SF4 D. CCl2Br2 > CH2Cl2 Which of the following pairs of mol..
3- A 498mL sample of laughing gas, N2O, is at 30 *C and 414 torr pressure (a) How many gas molecules are present. (b) How many atoms are there
A compound X has molecular ion peaks in its mass spectrum at mass 140 and 142, and shows prominent peaks in its IR spectrum at 3150-3000 and 1600 cm^-1.
A quantity of 6.0 moles of an ideal gas is reversibly heated at constant volume from 17 C to 35 C. Calculate the entropy change.
On size-exclusion chromatogram you have three peaks (2.9, 3.5, and 4.8 min). Column dead volume is 12 mL, and flow rate 4 ml/min. Are your separation conditions fit for size-exclusion requirements? Explain why.
The mixture is diluted with deionized water to the mark and shaken vigorously. What mass of AgBr would precipitate from this mixture?
For the gas N2O calculate the number of grams are present in 1.05E4 mL under a pressure of 801 mm Hg at 56.3 oC.
What is the difference (in pH units) between the initial pH of a 0.20 M NH3 / 0.20 M NH4Cl buffer to the pH of the buffer after the addition of 10.0 mL of 0.10 M HCl to 65.0 mL of the buffer
The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.323 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 24.5°C, what is the minimum temperature reached by the solution?
The type of nuclear reaction shown below is which can be recognized by the fact that it has 2 reactant and 2 products
Which of the following bond moments would cancel the lone pair moment? S=O S-F N-H another lone pair Consider the molecules F2, OF2, PF3, CF4, and BF3. Which molecules have a dipole moment?
What mass of grams of KNO3 will crystallize out of solution if exactly 475.0 g of its saturated solution at 75 celsius is cooled to 25 celsius?
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