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If a face centered cubic unit cell has a volume of 1.477 x 10 to the eighth power pm cubed and the ions at the corners touch the ions on the face, what must the ions radiusa 125 pmb 4243 pmc 186 pm388 pm
the distribution of velocities for a mole of nitrogen molecules is characterized by the ____ distributiona Fermi-Diracb binaryc bimodald. Boltzmann
Electrical and thermal conductivity in metalsa is explained by matrix isolation techniquesb is a function of the level of contamination by excess electronsc is explained by band theoryd. is explained by a dipolar coupling model
experiment to determine delta H of solution, would you expect to get a larger, smaller or identical temperature change? why?
How many moles of CO(NH2)2 are present in 150 g of water, if the freezing point of the solution is -4.02C? kf(water) = 1.86 K · kg/mol.
What volume of hydrogen gas is produced when 68.4 g of iron reacts completely according to the following reaction at 25 C and 1 atm iron (s) + hydrochloric acid (aq)--------- iron(II) chloride (aq) + hydrogen (g)
How much Tris (molecular mass 121.14 g/mol) is required to react with 35 mL of 0.10 M HCl
how many liters of h2 gas at stp can be produced by the reaction of 4.60g of na and excess water accoring to the
In the information of smog, nitrogen and oxygen gas react to form nitrogen dioxide. How many grams of NO2 will be produced when 2.0 L of nitrogen at 840 mmHg and 24 degrees C are completely reacted
What is the percent dissociation of ascorbic acid if the solution has a pH = 5.50 and a pKa = 4.10?
the equilibrium constant is 1.5x 10^-2 at 370 degrees C and delta H is 16.0 KJ at 25 degrees C. Assuming delta H and delta S are temperature independent, calculate delta S for the reaction
A sample of ammonia gas (NH3) is completley decomposed to nitrogen gas and hyrdogen gas. If the total pressure at the end of the reaction in 866mmHg
How many joules are released when 6.94 moles of water cools from 100.0 degrees Celsius to 0.0 degrees Celsius?
A sample of aluminum metal absorbs 9.86J of heat,upon which the temperature of the sample increases from 23.2 C to 39.5 C. SInce the specific heat capacity of aluminum is 0.90 J/g-K, the mass of the sample is what in grams
nitrogen and hydrogen form the compound NH3 how many hooks would dalton put on the nitrogen atom to explain this compound?
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