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Give the number of atoms in the unit cell. Assume the structure consists of identical atoms. face-centered cubic a. one b. two c. four d. eight
The internuclear distances in gas-phase ionic molecules are considerably smaller than those in the corresponding crystals.For exemple,
A mixture is prepared by adding 50.0 mL of 0.200 M NaOH to 75.0 mL of 0.100 M NaOH. What is the [OH-]? the answer is .140 M
Why is the first step in an electrophilic aromatic bromination reaction so much more endothermic than the first step in an electrophilic addition to an alkene
An object has a mass of 50.0g. When it is dropped into a graduated cylinder containing 15mL of water, the water level in the cylinder rises to 32mL.
The endpoint of the titration is surpassed. How will this techinque error affect the reported percent avilable chlorine in the bleach sample- too high or too low. Explain.
a solid,is thought to be either zinc or lead(2)nitrate.how are we going to determine the identity of the solid?
In the standardization of NaOH, 38.76 mL of NaOH was required for 0.8169 g potassium acid phthalate. Estimate the accuracy we should expect in the molarity of the NaOH solution assuming the weighing error is ±0.1 mg
The second virial coefficient of methane can be approximated by the empirical equation , where a = -0.1993 bar-1, b = 0.2002 bar-1, and c = 1131 K2 with 300 K
Although all bond lengths in benzene are identical, that is not always true for all aromatic compounds. In napthalene, for instance, the C1-C2 bond is shorter than the C2-C3 bond. Explain, using reasonance theory
Calculate the nuclear binding energy per mole of nuclei of and the binding energy per mole of nucleons for 31P. The required masses (g/mol) are: 1 1H = 1.00783; 1 0n = 1.00867; 31 15P = 30.97376
A bag of potato chips contains 595 mL of air at 30.0 degrees celcius and a pressure of 770 mm Hg. Assuming the bag does not break, what will be its volume at the top of a mountain where the pressure is 438 mL and the temperature is 8.00 celcius?
An organic compound has a molecular weight of 176.12 amu and was found to contain only three elements, C, H and O. When a 1.0000 g sample was completely combusted in air
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