Estimate avogadro-s number in atom-mol
Palladium crystallizes with a face-centered cubic structure. It has a density of 12.0 g/cm^3, a radius of 138 pm, and a molar mass of 106.42 g/mol. Use these data to estimate Avogadro's number in atom/mol.
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A 0.456 gram sample of an unknown mono protic acid (let's call it HZ) was dissolved in some water (you pick the amount). Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH. What is the molecular weight of th
The density of pure silver is 10.5 g/cm3 at 20°C. If 6.17 g of pure silver pellets is added to a graduated cylinder containing 14.1 mL of water, to what volume level will the water in the cylinder rise?
What is the mechanism of the reaction between benzophenone with sodium borohydride and indicate what bonds are broken/formed and draw arrows to show what happens to the electrons as bonds break and form?
What is the concentration of vitamin C in the juice in mg vitamin C/100 mL of juice (mg/ 100 mL)?
Write the expression for the equilibrium constant, Kc, for the following chemical reaction?
If the open-tube manometer in the figure below contains a nonvolatile silicone oil (density = 1.30 g/cm3) instead of mercury (density = 13.6 g/cm3), what are the pressures in the flask as shown in parts a and b in torr, atmospheres, and pascals? (
Calculate the molarity of the solution. How many grams of KNO3 are needed to make 450 mL of a solution that is to contain 5.50 mg/mL of potassium ion?
What is the approximate pH of a solution prepared by adding 20 mL of 0.10 M NaOH to 200 mL of 0.10 M HCl?
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