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An unkown metal crytallizes in one of the three cubic lattices.The edge length of the unit cell is 408pm.Given that the atomic radius of the metal is 144pm and the density of the solid is 19.3g/cm-3, what is the atomic symbol of the metal? a=2R a=(4/ROOT3)R a=(2ROOT2)R
m is a metal x is a non-metal. upon strong heating of 0.5000g of mxo3s it decomposes forming mos and xo2g. then all of
What is the pressure in a 10.0 L cylinder filled with 0.470 mol of nitrogen gas at a temperature of 329 K ?
How much heat (in kJ) is evolved in converting 1.00 mole of steam at 145 C to ice at 0 C)? (The heat capacity of ice is 2.09 J/g C and the heat of vaporization of water is 32.9 kJ/mol)
Uric acid dissociates with a pKa of 5.80, and can be treated as a simple monoprotic acid in this pH range. Its solubility in urine depends on the relative amount of protonated and unprotonated forms
a gas is contained in a 5.0 l container at a pressue of 100kpa. what size container would be required to contain the
when water freezes its volume is increased by one-eleventh. in other words the volume of ice equals the sum of the
Compare mass, charge, and location of the subatomic particles in the atom. Particles are Proton, Nuetron, Electrons. What is the Mass,
draw the valid lewis structures of polyatomic ions in bro4-. determine the number of resonance forms for each structure
If 50.0g of sulfuric acid is spilled, what is the minimum number of moles of sodium carbonate that have to be added to it to complete this reaction?
According to the solubility rule, silver will precipitate with SO42- but doing my lab i found no precipitation when i added AgNO3
If a stream of N2O is passed through a tube 30mm in diameter and 25cm long at a flow rate of 0.7L/min, at what temperature should the tube be maintained to have a partial pressure of 1.0mm of O2 in the exit gas? Assume that the total pressure of t..
How much heat is required to raise the temperature of a 7.40-g sample of iron (specific heat = 0.450) from 25C to 79.8C?
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