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An atom of aluminum (Al) has a diameter of about 1.2 10-8 cm. (a) What is the radius of a(n) aluminum atom in Angstroms (Å)? Å What is the radius of a aluminum atom in meters (m)? m (b) How many aluminum atoms would have to be placed side by side to span a distance of 6.0 µm? atoms (c) If the atom is assumed to be a sphere, what is the volume in m3 of a single aluminum atom?
A buffer is prepared by adding 9.00 g of ammonium chloride (NH4Cl) to 260 mL of 1.00 M NH3 solution. Write the complete ionic equation for the reaction that occurs when a few drops of nitric acid are added to the buffer.
What is the theoretical yield (in mol) of carbon monoxide when 2.62 mol oxygen reacts with 2.08 mol of ethanol (CH3CH2OH) to produce carbon monoxide and water
What is the hybirdization of a centeral atom that has four sigma bonds and has no pairs of electrons?
Calculate the approximate molarity of this solution from the volume, percent composition, and density.
Two particles with charges q1 and q2 are separated by distance d. Rank these scenarios according to the magnitude of the electrostatic (coulombic) potential energy.
The electrons in the bonding orbital tend to be distributed between the two atoms. This is because of their tendency to be shared among the two nuclei.
A Volume of 211 mL of H is collected over water, the water level in the collecting vessel is the same as the outside level. Atm Pressure is 756 Torr and the temp is 25 degree C. Calculate atomic mass of the metal.
Calculate pCu2+ at each of the following points in the titration of 50.0 mL of 0.001 M Cu 2+ with 0.001 M EDTA at pH 11.00 in a solution whose NH3 concentration is somehow fixed at 0.100 M: a) 45.0 mL b) 50.0 mL c) 55.0 mL
Pick and element or compound and state how many grams of that substance are needed to have a mole of that substance.
In the COCl2 molecule, carbon is the central atom. Based on the best Lewis structure for COCl2, what is the formal charge on carbon
3I2(s) + 2P(s) → 2PI3(s) What is the percent yield of the reaction if 28.3 g of phosphorus triiodide PI3 is obtained when 68.0 g of I2 and 68.0 g of P are mixed and allowed to react.
Calculate the root mean square speed of (a) Xe atoms and (b) He atoms at 298K. What si the root mean square of each of these at 500K?
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