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1/ Ksp = 7.4×10-9 for MgF2 at 25 °C.calculate the maximum mass of MgF2 which can dissolve in 100. mL of 0.100 M KF?2/If the cumulative formation constant for MX2(aq) is ß2 = 30, what is the concentration of MX2(aq) in a solution in which the concentrations of M2+(aq) and X-(aq) both just happen to be 0.15 M?
an aqueous solution is 22.0 by mass silver nitrate agno3 and has a density of 1.22 gml. what is the molarity of silver
The ratio of effusion of an unknown gas is measured to be 24.0ml/min. Under the same conditions, the rate of effusion of pure methane gas is 47.8ml/min. What is the unknown gas?
0.5g KCl was dissolved in 100g water and the solution originally at 200C, froze at - 0.240C. Calculate the percentage ionization of salt. Kf per 1000g of water = 1.86K
The lab is synthesis of Methyl Red. The question is that diazonium salts cople with phenols in slightly alkaline solution. What effect does the PH of the solution have on reactivity of the phenol
A titration is performed by adding 0.400 M KOH to 40.0 mL of 0.300 M HCl. What is the pH after addition of 5.0 mL of the base?
What is the volume of 25.0 g of methylene chloride and what is the mass of 398.0 mmol of benzene (C6H6)
What is the difference in water solubilities of fumaric and maleic acid? Which one is more water soluble?
What is the ratio of the rate constants for this reaction when the temperature is decreased from °C to °C?
Write the formula of the nine chemical substances mentioned in the introduction. Classify each as either a molecular compound, an ionic compound, a molecular element, or a metal. For the copper cycle experiment
The rate constant for electron transfer between V 2+ (aq) and V 3+ (aq) is observed to depend on [H+]: k = a + b/[H+], where a and b are constants. Propose a mechanism and express a and b in terms of the rate constants in your mechanism.
Compute the pressure (in atmospheres) Using the van der Waals equation, exerted by water(H2O) of 23.93 grams at 36.11 degree celsius in a 1.00 Litre container.
an unknown solid mixture containing benzoic acidcopperiisulfate and sand. she added 15ml.of acetone to her sample.
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