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If 12800 calories is required to change 45g of substance X from a liquid to a gas, what is the heat of vaporization of substance X?
The standard free energy of formation of gaseous hydrogen iodide is 1.30 kJ/mol at 25°C. Find Kp for the reaction 2HI(g) -> H2(g) + I2(s) at this temperature.
What mass of Ag2CO3(s) in grams is theoretically produced by mixing 125 mL of 0.315 M Na2CO3(aq) and 75.0 mL of 0.155 M AgNO3(aq)?.
A solution of ethanol (C2H5OH) in water is prepared by dissolving 57.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 255.0 mL of solution.
A 355 ml container holds .146g of Ne and an unknown amount of Ar at 35 degrees C and a total pressure of 26 mmHg. Calculate the moles of Ar present
Find the intrinsic conductivity for germanium. (Assuming ni = 2.5x 1019/m3 at room temperature.)
Which is the excess reactant in the given reaction Na 2 S + CuSO 4 Na 2 SO 4 + CuS it is given that you start this reaction wit 15.5 grams of Sodium sulfide and 12.1 grams of copper sulphate?
What is the molarity of a solution of 12.0 g of NH4Br in enough H2O to make 240 mL of solution?Answer in units of M.
61.0 mL of a solution(1.60 M) is diluted to a volume of 208 mL. A portion of that solution(104-mL) is diluted using 121 mL of H 2 O. determine the final concentration?
What is the molarity (M) of a solution that contains 2.08 grams of NaOH (MM = 40.00 g/mol) in 79.65 mL of solution.
The oxide of 'N' element contains 33.33% of the element .The same element forms a chloride whose Vapour density is 59.25.
What is the maximum number of electrons that can be identified with each of the following sets of quantum numbers? In some cases, the answer may be "none."
calculate th eapproximate freezing points of the following aqueous solutions (assume complete dissociation) a. 0.800 m NaCl b. 0.800 m
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