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A dilute aqueous solution of PtCl4 is pale yellow to colorless, however a concentrated solution is deep red .Explain what explanation can you give for this behavior?
While the radio waves transmitted by a radio station have a frequency of 81.7 MHz, Define the wavelength of the waves, in meters
The specific rotation, [?]D, for sucrose is +67. What is the observed rotation for a solution of 0.20 g of sucrose in 10 mL of water in a sample tube having a pathlength of 10 cm
Glycine is the simplest of the amino acids. Treat the amine and carboxylic acid groups as functional groups as independent functional groups.
For the equilibrium PCl5(g) PCl3(g) + Cl2(g), Kc = 2.0 × 101 at 240°C. If pure PCl5 is placed in a 1.00-L container and allowed to come to equilibrium, and the equilibrium concentration of PCl3(g) is 0.13 M, what is the equilibrium concentration o..
Which of the following substances, when dissolved in water, uses ion-dipole forces as the principal type of intermolecular attraction with water molecules. A) CH4 B) CH3OH C) CO2 D) KCl E) C6H6
a gas cylinder contains 40.0 L of gas at 45.0C and has a pressure of 650. torr. What will the pressure be if the temperature is changed to 100C?
A solution of chloroform (CHCL3) in carbon tetrachloride (CCL4) is 1.87 molar chloroform and has a density of 2.93 grams/mL. Calculate
A closed vessel contains moist air at 20 degree celcius, the relative humidity being 30 %. What would be the relative humidity become if the vessel were cooled to 10 degree celcius?
Further recylcing reactions that would take the products back to some of the monomers. What reactions to use? What would you get as products
If the average speed of an oxygen molecule is 4.05multiplied by 104 cm/s at 25°C, what is the average speed of a CO2 molecule at the same temperature?
A solution containing Pt4+ is electrolyzed with a current of 5.00 A. How long will it take to plate out 77% of the platinum in 0.50 L of a 0.010 M solution of Pt4+?
What was the percentage by mass of Mg(OH)2 in the original sample. When Mg(OH)2 or Al(OH)3 reacts with HCl(aq), the products are a chloride salt, water and CO2(g)
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