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1-Mercury is a poisonous metal that is used in thermometers. When mercury is at temperatures below its freezing point it has a simple cubic unit cell. How many atoms of Hg are present in each unit cell?
2-Nickel has a face-centered cubic unit cell. How many atoms of Ni are present in each unit cell?
3- Tungsten has a body-centered cubic unit cell. How many atoms of W are present in each unit cell?
The reactions represented below are all spoontaneous as written. For each, write the anode and cathode half - reactions and indicate the signs of the electrodes.
the osmotic pressure at 20.0 degrees C is 3.62x 10^-3 atm. What is the molar mass of the protein hemoglobin?
Calculate the mass in grams for a sample of aluminum that absorbs 1.85 when its temperature rises from 65 to 178.
During the conversion of glutamine to proline, you have labeled the gamma-carbonyl group of glutamine with 14C. What carbon in the proline product would be labeled
Show why this chemical is dangerous, by showing chemical reactions for its formation in the environment and its reactions in the atmosphere.
Chemistry Concentrations, In each of the following pairs, indicate which has the higher concentration of Cl- ion
Determine the following characteristics of the unknown acid: molecular formula, molar mass, Lewis structure.
A 0.464 g sample of a compound containing the elements carbon, hydrogen, oxygen, and sulphur was burned completely, yielding 0.969 g CO2 and 0.198 g H2O. In a separate experiment, all the sulphur in another 0.464 g sample was converted to 0.859 g ..
In the first step of the trypsin mechanism, the side-chain oxygen of Ser 195 attacks the carbonyl carbon of the substrate. Use PyMOL and your model of the enzyme substrate complex to determine the distance between these two atoms.
Which of the following acids (listed with pKa values) and their conjugate base would form a buffer with a pH of 8.10
Descrbie observable differences between elemental copper and Cu2+ ion and between H2
You dissolve 12.6352 g of potassium iodide in water and bring the volume of solution to 250.0 ml. What is the molar concentration of KI and what volume of 0.0436 molar hydrochloric acid is required to react with 30.0 ml of 0.0278 molar LiOH?
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