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The metal iridium (lr) crstallizes with a face-centered cubic unit cell. given that the length of the edge of a unit cell is 383 pm, determine the density of iridium in g/cm3.
Calculate the heat energy released when 10.3 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point. Constants for Mercury at 1 atm: Heat capacity: 28.0 J/(mol*K) Melting Point: 234.32 K Enthalpy of fusion
What is the atomic radius of a Cs atom( either in pm or A) . State assumptions used
You titrate a 425 mL sample of an acide mine drainage with a 0.32 M solution of NaOH. It takes 22.4 mL of the sodium hydroxide to reach the equivalance point
A 100. mL sample of 0.10 M HCl is mixed with 50. mL of 0.12 M NH3. What is the resulting pH?(kB FOR NH3= 1.8 x 10^-5)
What is the density of gallium in grams per cubic centimeter at 25 C if a 1.00 cube has a mass of 0.2133.
Compute the amount of heat evolved in the oxidation of 32.0 grams of Fe at the temperature 25 oC and pressure 1 atm pressure ( ΔHfo(Fe 2 O 3 ,s) = -824kJ/mol)
What is the structure of the precipitate that forms after the sulfuric acid
the reaction was found to be first order both with rspect to NO and O3 (expressing concentrations as molarity) What are the units of the rate constant K for this reaction?
How Much Chlorine Must be Added to a Swimming Pool? A solution used to chlorinate a home swimming pool contains 7% chlorine by mass. An ideal chlorine level for the pool is one part per million (think of 1 ppm as being 1 g chlorine per million gra..
A student measures out 100.0 ml of 1.00 M HCl and places it in a styrofoam cup. The temperature of the HCl is 22.30C. She then addes 1.002 g of MgO to the cup.
When 28 mL of a 430 mL stock solution containing 2.3 M AlCl3 is diluted to 114 mL, how many moles of Al3+ are in the new solution?
Pressure is gradually decreased from 87.7mL to 42.6mL. What is the final pressure of ammonia if there is no change in pressure?
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