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Mercury is a 6th row and Zinc is a 4th row transition metal. if ionization energy depends upon effective nuclear charge and the distance of electrons from the nucleus, why do you think it takes more energy to ionize Mercury than Zinc?
Hydrogen peroxide (H2O2) decomposes according to the equation H2O2(l) ? H2O(l) + (1/2)O2(g). Calculate Kp for this reaction at 25oC. (Ho = -98.2 kJ/mol, So = 70.1 J/K•mol)
Find the mass of the substance and the volume of a gas in a reaction - determine the mass of solid ammonium nitrate that must be used to obtain 0.145 L of dinitrogen oxide gas at STP.
A 50.70 mL of sample of Ca(OH)2 solution is titrated with 0.1188 M HCl. What is the molarity of the calcium hydroxide solution if the titration requires 38.10 mL of the acid to reach the endpoint
A buffer, consisting of H2PO4- and HPO42-, helps control the pH of physiological fluids. Many carbonated soft drinks also use this buffer system.
What is the ratio of the rate of effusion of ammonia, NH(3), to that of hydrogen chloride gas
Describe how you would make 4 liters of a 0.075 M phosphate buffer at pH of 7.15 without using a pH meter, if the only materials
If your body develops a charge of -11 (microcoulombs), how many excess electrons has it acquired
At 25 degrees celsius and 750 mm Hg, 1.05 g of this gas occupies a volume of 0.500 L. What is the molecular formula of the gas?
What is the de Broglie wavelength in cm, of a 12.7 g hummingbird flying at 1.15 multiplied by 102 mph? (1 mile = 1.61 km.)
Calculate the number of sodium ions in (6.107x10^1) g sodium phosphate. 2. An aqueous solution of 10.0 grams of ammonium sulfide is mixed with an aqueous soluion of 10.0 grams of copper (II) chloride. What is the formula of the compound that precipit..
hydrochloric acid to form benzoic acid, if 1.47 g of benzoic acid were formed, how many mmol of sodium benzoate would have been used?
A hypothetical element, Z, has two stable isotopes. Z-38 = 38.012 u 75.68% Z-46 = 45.981 u 24.32% The element's atomic mass would be closest to which of the elements? K, Ar, Ca
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