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While only nanogram amounts are available, spectroscopic analysis (X-ray photoelectron spectroscopy, etc.) suggests that setonium is in the same family as chromium and will share many of its chemica
What is the final temperature when 20.0 g of water (specific heat capacity 4.184 J•g-1•K-1) at 80.0 ?C is mixed with 30.0 g of water at 20.0 ?C in an insulated container
What is the final temperature when 20.0 g of water (specific heat capacity 4.184 J•g-1•K-1) at 80.0 C is mixed with 30.0 g of water at 20.0 ?C in an insulated container
In a 100 ml sample of buffer solution made of propanoic acid concentration .35M and sodium propanoate concentration .5M some NaOH is added. .0040 mole of solid NaOh is added Calculate pH of solution
A sample of 40.0 ml of .1 M acetic acid is titrated with .150 M NaOH Ka = 1.8 x 10^-5 What volume of NaOH is used in the titration in order tor reach the equivalence point. What is molar concentrati
30.0 mL of 0.10 M Ca(NO3)2 and 15.0 mL of 0.20M Na3PO4 solutions are mixed. After the reaction is complete, which of these ions has the lowest concentration in the final solution
A solution of Ba(OH)2 is standardized with potassium acid phthalate (abbreviated KHP), KHC8H8O4 (M = 204). If 1.530 g of KHP is titrated with 34.50 mL of the Ba(OH)2 solution, what is the molarity
The value of which concentration unit for a solution changes with temperature a. molarity b. molality c. mole fraction b. mass percentage
In most of its ionic compunds cobalt is either Co(II) or Co(III). One such compound containing chloride ion and water of hydration, was analyzed, and the following results were obtained. A 0.256g sa
In the presence of nitric acid UO2 undergoes a redox process. It is converted to UO2 and nitric oxide(NO) gas is produced according to the following unbalanced equation: H(aq)+NO3(aq)+UO(aq) arrow N
The condensate from a steam distillation contains 10g of compound A and 18g of Water. At the temperature of the distillation, the vapor pressure of Water is 660 Torr. What is the approximate Molecul
A polyatomic ion is composed of C, N, and an unknown element X. The skeletal Lewis structure for this polyatomic ion is [X?C?N]-. If the ion X4+ has the electron configuration
The flask is heated to 100°C and the reaction is then allowed to go to 100% completion. If the total pressure of all gases in the flask at 100°C is 950. torr when the reaction is complete, w
A 1.00 g sample of stream water was found to contain 5.0*10-6 g lead. calculate the concentration of lead in the stream water in units of % (m/m),ppt and ppm. which is the most suitable unit
Choose the situation below that would result in an exothermic Hsolution. options: When H soetel H hyd When H solute is close to H hyd When H solute H hyd
A compound contains 78.14% boron and 21.86% oxygen. Determine the empirical formula for this compound. need help on.
According to the following thermochemical equation, what mass of H2O (in g) must form in order to produce 975 kJ of energy
What is the pH of a 10^-5 M Co(ClO4)2 solution? Check your answer to be certain that Co(OH)2(s) will not precipitate. (Assume no carbonate is present).
Can the solubilities of formate Pb(CHO2)2 (pKso = 6.70, pKa = 3.75) and copper iodate Cu(IO3)2 (pKso = 7.13, pKa = 0.79) be made equal by adjusting pH? If so, at what pH value are the solubilities
Sodium azdide, NaN3, decomposes according to the following equation. What volume of N2 at 1.1 atm and 50.0C will be produced by the decomposition of 5.0g of sodium azdide. NaN3(s) --->Na(s)+N2(g)
When 1.48g of mercuric chloride is vaporized in a 1.00 L bulb at 680 K, the pressure is 225 mm Hg. What is the molar mass of the mercuric chloride vapor
what is the mass of CO2 exhaled with one breath. Assume T = 37oC. b. Glucose (180.16 g mole-1) is oxidized to CO2 according to the equation C6H12O6 + 6 O2 ? 6CO2 + 6H2O. What mass of glucose is oxid
Convalent bonds form when a) 2 nonmetals combine b)2 metals combine c) a metalloid bonds to a nonmetal d) a and c are true e) a, b and c are true
Describe the three types of collision,? and the beginning analysis process for each type? Answer should be 2 to 3 paragraphs each.