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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?
where r is the radius. Compute the volume of a sphere with a radius of 593 pm. State your answer in units of m3.
If Kp = 0.032 at this temperature, what will be the equilibrium overall pressure starting from pure CaSO4(s)?
Calculate the amount of 6M NaOH required to react completely with 1.51 grams of Methyl Salicylate. How much of the 6M NaOH that you used was in excess of the theoretical amount?
138g of K and 448g of I react completely to form KI. What mass of KI would have been produced if 138g of potassium and 41g of iodine has been used?
Calculate the pH of a buffer solution containing 0.65 M CH3COONa. Calculate the pH after 0.0010 mol HCl is added to 450.0mL of buffer.
What is the pH of a 0.175-M potassium formate solution, KHCOO? The ionization of formic acid is 2.1 x 10^-4
What is the concentration of a solution prepared by dissolving 125 g cholesterol in hexane to a final volume of 685 mL?
How long will it take to deposit 89 g of magnesium from an electrolysis cell containing MgO at a current of 12.5. A magnesium formation is the only cathode reaction mg = 24glmol.
The solubility of silver sulfate in water is 0.223% (w/v) at 35°C. Calculate the solubility product of this salt at this temperature
What volume of 4.7 M NaOH is required to react completely with 1.7 mL of a 1.51 M HCl solution?
How would the observed molarity of your experiment be affected by the following circumstances. (i.e. would it be higher than the true value, lwer than the ture vaule or remain unchaged?)
Calculate the mass defect in Fe-56 if the mass of an Fe-56 nucleus is 55.921 amu. The mass of a proton is 1.00728 amu and the mass of a neutron is 1.008665 amu.
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