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Which of the following identifies the species that occupy the lattice points in crystals of zinc chloride and zinc metal?
A) Some lattice points in each substance contain anions
B) Some lattice points in each substance contain cations
C) The lattice points in zinc chloride are occupied by ions while the lattice points in zinc metal are occupied by atoms.
D) The lattice points in zinc chloride are occupied by molecules while the lattice points in zinc metal are occupied by atoms.
E) The lattice points in zinc chloride are occupied by molecules while the lattice points in zinc metal are occupied by ions.
On a hot day a room air conditioner uses 1.0 kW of electrical power and works with a coefficient of performance of 2.9. How much heat does the AC remove from the room in 1 min?
How many moles of H+ are in 1.000 mL of the aqueous 2.500 molar HCl solution mentioned above? What is the normality of solution mentioned above? How many H+ ions are present in 1.000 mL of this solution?
At a certain temperature the equilbrium constant is 396 K for H2(g) + I2(g) ↔ 2HI(g) , Calculate the the equilbrium constant for 0.5H2(g) + 0.5I2(g) ↔ HI(g)
Concentrated acetic acid is a Class II combustible liquid. What is the molecular weight of acetic acid that will form 2 moles of CO2 assuming complete combustion?
Rank the following in order of decreasing number of atoms
The first ionization energy of bismuth is Ei1 = +703 kJ / mol. What is the longest possible wavelength of light that could ionize an atom of bismuth?
The activity of the mixed sample was found to be 4.35 x 107 dpm for a sample of 0.125 mg of Pu. Calculate the weight % of each Pu isotope present.
Calculate the cumulative acid equivalents per square meter that were deposited in the watershed over the entire period 1880-1950.
The temperature of a 2.o-liter sample of helium gas at stp is increased to 27 degrees Celsius and the pressure is decreased to 80kpa what is the new volume of the helium sample?
A piece of a newly synthesized material of mass 25.0 g at 80.0C is placed in a calorimeter containing 100.0 g of water at 20.0C. If the final temperature of the system is 24.0C, what is the specific heat capacity of this material?
Propane burns in oxygen to produce carbon dioxide and water. c3h8 +5o2 yeilds 3co2 +4h2o Calculate the math of co2 that can be produced if reaction of 44g of propane and suficient oxygen has a 60% yeild.
A 10.00 mL 0.25 M formic acid sample is being titrated with 0.25 M NaOH. What is the pH of the solution after adding 15.00 mL NaOH solution?? Ka=1.8x10-4
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