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Clausthalite is a mineral composed of lead selenide (PbSe). The mineral adopts a NaCl-type structure. The density of PbSe at i25 °C.is 8.27 g/cm3 Calculate the length of an edge of the PbSe unit cell.
Which of the following would be expected to have a bent (angular) shape?
A hydrate has the following percent composition: Pb = 54.61%, C = 12.66%, H = 1.61%, O = 16.88% and H2O = 14.24%. What is the formula of the hydrate.
If 25.21 ml of NaOH solution is required to react completely with 0.550 g KHP, what is the molarity of the NaOH solution
Compound J, C16H16Br2, is optically active. On treatment with strong base, compounds K and L (each C16H14) are formed; K and L each absorb only 2 equivalents of hydrogen when reduced over a Pd/C catalyst. Compound K reacts with ozone to give pheny..
epsom salts are hydrates of magnesium sulfate. the formula for epsom salts is mgso4 . xh2o. a 7.834g sample is heated
consider the following reaction where kc 54.3.h2g i2glt----gt 2 higstarting with a concentration of 0.043 m for hi
Honey is made from a mixture of fructose, glucose and sucrose. How can you use Benedict's reagent to determine the number of moles of sucrose in a 1.0 g sample of honey?
For the chemical system CO + Cl2 COCl2; K = 4.6 x 109. If the concentration of the product were to double, what would happen to the equilibrium constant
The concentration of commercially available nitric acid is 70.0 percent by mass, or 15.9M. In 100 grams of solution, there are 1.11 mol HNO3. Calculate the volume of 100 g of the solution.
Now calculate the amount of moles of NaHSO4(s) to be dissolved in the system to lower the pH to 2.40. Include the rxn equations that take place.
Water has a density of 1 g/cm3. How much pressure would a column of water exert that has a cross sectional area of 1 cm2 and a height of 100 cm
note that the integrals for some of the resonances in the 1h nmr spectrum are higher than they should be due to the
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