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Iron has a BCC crystal structure, an atomic radius of 0.124 nm, and an atomic weight of 55.85 g/mol. Compute and compare its density with the actual value of 7.87
On average, how many collisions between nitrogen molecules and oxygen molecules will occur in one second in 1.00 cm3 of air at 25oC and 1.00 bar
Calculate the percentage of He atoms at 100oC which have speeds in the range between 1200 m/s and 1300 m/s. Calculate the percentage of these He atoms that have speeds greater than 5000 m/s
At what pressure does the mean free path of argon at 25 C become comparable to the diameter of a spherical vessel of volume 1.0 dm^3 that contains it? Take ? =0.36nm^2.
1. Average speeds of gas particles (give answers in m/s) a. Calculate the average speed of Hg vapor atoms at 500oC b. Calculate the root-mean-square speed
A 1.0 dm^3 glass bulb contains 1.0x10^23 H2 molecules. If the pressure exerted by the gas is 100 kPa, what is (a) the temperature of the gas, (b) the root-mean-square speeds of the molecules, (c) Wo
When 1.000 mol of pcl5 is introduced into a 5.000l container at 500k 78.50% of the pcl5 dissociates to give an equilibrium mixture of pcl5, pcl3, and cl2
Heat energy is added to a 352 g block of nickel, and the temperature increases from 21 degrees C to 53 degrees C. If the same amount of heat was added to the same mass of water at the same temperatu
A tank containing liquid butane and one containing liquid propane are sitting adjacent to one another. Each tank is equipped with a regulator with a pressure gauge
How long would it take for 1.50 of water at 100.0 to be converted completely into steam if heat were added at a constant rate of 18.0
Calculate the pH of the resultant solution of mixing together two solutions of 2 L of 1.0 M acetic acid, 0.5 L of 1.0 M sodium acetate and then adding 8 g of solid NaOH (MW = 40.0 g/mol)
There are 3 different possible structures for dibromoethene molecule, C2H2Br2.One of them has no net dipole moment, but the other two do. Draw a Lewis strucutre for each isomer. Include H atoms.
4.5 g CH4(g) occupies 12.7L at 310K. Calculate the work, heat, energy, and enthalphy change upon expansion by 3.3L @p=constant. please show the equations used.
If globally averaged dry and wet deposition rates for SO_2 are 1.0kg/ha/yr and 5.0kg/ha/yr, respectively, then what is the lifetime of SO_2 due to the combined processes of wet and dry deposition? A
The kidneys function to eliminate ammonia from the blood. Based on the pK value, what is the molecular form that predominates in the blood? Could this molecule easily diffuse through th ehydrophobic
The kidneys function to eliminate ammonia from the blood. Based on the pK value, what is the molecular form that predominates in the blood? Could this molecule easily diffuse through the ehydrophobi
What is the molecular form that predominates in the blood. Could this molecule easily diffuse through th ehydrophobic lipid membrane of a kidney cell. Explain.
The final partial pressure of NOBr was 2.5 atm after the following equilibrium was established: 2NOBr(g) 2NO(g) + Br2(g). What is the value of Kp
Calculate the de Broglie wavelength of an electron of an electron accelerated through a potential difference of (a) 100V and (b) 100kV.
Write down the formulas relating (a) frequency and wavelength, (b) Wavelength and momentum, and (c) energy and frequency of a photon.
Why is a diffraction pattern generated by an electron beam formed by electrons interfering with themselves rather than with one another
Which of the experimental results for the photoelectric effects suggest that light can display particle-like behavior
Aliphatic esters have carbonyl stretches that absorb around 1750 - 1735 cm-1. Unstrained aliphatic ketones have carbonyl stretches that absorb around 1715 cm-1. Explain this observation.
What percent of the hydrogen peroxide has been decomposed in mixture of (0.10M KI = 15.0mL, H2O= 35.0 mL and 3% hydrogen peroxide= 10.0 mL) when 20.0 mL of O2 gas has been evolved