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The density of a given solid and liquid K are 992.6 Kg m-3 and 933.4 Kg m-3of molar mass 147.2 g/mol at its normal melting temperature of 372.54, respectively. Compute ΔHo fusion and ΔSo fusion for this substance If the pressure is increased to 120 bar, the melting temperature increases to 375.88 K..
What mass of barium is produced when molten barium chloride is electrolyzed by a current of 2.50 x 10^5 A for 6.00 hours
Determine the angle for the first-order diffraction of xrays with lambda=362 pm, reflected from planes in mica (a silicate mineral) separated by 997 pm
The four major attractive forces between particles are ionic bonds, dipole-dipole attractions, hydrogen bonds, and dispersion forces. Consider the compounds below
A student studied the clock reaction described in this experiment. She set up Reaction Mixture 2 by mixing 20 mL of 0.010 M KI, 10 mL 0.001 M Na2S2O3, 10 mL 0.040 M KBrO3, and 10 mL 0.10 M HCl using the procedure given. It took about 45 seconds fo..
How many grams of dry NH4Cl need to be added to 2.30L of a 0.800 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.83? Kb for ammonia is 1.8 * times 10^-5
A cylinder is separated into two sections Y and Z by an insulating frictionless piston and sealed at both ends. Each section has two moles of an ideal gas.
List the letter that corresponds to the reagent from the reagent table you need to carry out the following synthesis in 5 steps or less. Heat may not appear on the reagent table with the reagent
Solubility of a gas in a liquid increases as the temperature increases. D. The solubility of a gas in a liquid increases as the pressure increases.
Plan and Design Lab: To Determine the water of crystallization of a hydrated salt XY•nH2O and to determine the value of n in the formula XY•nH2O with a relative formula mass of 392.14.
Describe how you prepare 5.00 times 10^2 mL of 0.7 M CuSO4. How many grams of CuSO4 are needed. How many significant figures are used for the mass. What type of container should it be made up in.
What volume of H2O(g) is produced when 7.90 mo of C2H4 (g) reacts at STP? C2H4 (g) + 3O2 (g) ----> 2 CO2 (g) + 2 H20 (g)
Laboratory-grade diethyl ether contains small amounts of ethanol (1-2%). Is this grade of solvent suitable for the preparation
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