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Iridium crystallizes in a face-centered cubic unit cell that has an edge length of 3.833 Å.
(a) Calculate the atomic radius of an iridium atom.
(b) Calculate the density of iridium metal.
A student poured the hydrogen peroxide unknown into a clean, wet erlenmeyer flask. The stdent thought that as long as the flask was clean, this preactice would not lead to an error in the results. Briefly explain.
Chemicals available for extractions: CH2CL2, 1M NaOH, 1M HCL and sodium sulfate for drying
1. Explain how to use Lewis electron-dot symbols to depict main-group atoms and ions. 2. How to explain the electronic structure of ions using electron configurations and Lewis electron-dot symbols.
vinegar is a 5.0% solution by weight of acetic acid (CH3CO2H)in water. given that the ph for acetic acid is 2.41, the ka=1.8X10-5 and assuming the density of vinegar to be 1.00g/cm3, what is the percent dissociation for acetic acid in vinegar?
A salt water mixture is 33.0% (w/w) walt. (The w/w refers to weight / weight or mass / mass). If there are 300.0 g salt in the mixture, what is the total weight of the mixture?
Calculate the standard emf of a cell that uses Mg/Mg2+ and Cu/Cu2+ half-cell reactions at 25°C.
If an ideal monatomic gas originally at 26 C and 1.4 bar is allowed to expand reversibly as well as adiabatically from 1.9 L to 4.1 L, explain how much heat will be required to restore the system to its original temperature at constant volume
Phenolphthalein has a pKa of 9.7. It is colorless in its acid form and pink in its basic form. For each of the pH's listed, calculate the ratio and predict the color
the valve between a ten litre tank containing a gas at a pressure ofnbsp 1 atm and a three lite tank containing a gas
how much money would you spend on gas in one week if gas costs 1.10euros per liter and your car's gas mileage is 39.0mi/gal ? Assume that 1euro=$1.26 dollars.
graphite is an anisotropic conductor. it has high conductivity in the plane of the sheet and very low conductivity
1. What experimental conditions (volume, pressure, and temperature) are conducive to ideal gas behavior? 2. Define the compression factor (Z). Is Z going to be larger or smaller than 1 for a gas in which attractive forces dominate?
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