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the high temperature contribution of vibrational modes to the molar heat capacity of a solid at constant volume is R for each mode of vibrational motion. Hence, for a monatomic solid, the molar heat capacity at constant volume is approximately 3R. (a) The specific heat capacity of a certain monatomic solid is 0.392J*k^-1*g^-1. The chloride of this element (XCl2) is 52% chlorine by mass. Identify the element. (b) This element crystallizes in a face-centered cubic unit cell and its atomic radius is 128pm. What is the density of this solid?
Compute the volume of the tank if this tank has 115 moles of neon gas and has a pressure of 57 atm at a temperature of 45 0C.
What is the pressure in a 10.0 L cylinder filled with 0.470 mol of nitrogen gas at a temperature of 329 K ?
If 3.00 moles of ZnS are combined with 4.00 moles of O2 how many moles of ZnO can be produced and how many moles of the excess reactant will be left over?
At a particular temperature, N2O5 decomposes according to a first-order rate law with a half-life of 3.0 s. If the initial concentration of N2O5 is 1.0 × 1016 molecules/cm3, what will be the concentration in molecules/cm3 after 11.3 s?
Sulfamic acid is a primary standard that can be used to standardize NaOH. What is the molarity of a sodium hydroxide solution
Upon resonding to a 2am domestic transportation mishap, your hazmat team determines that a liquefied compressed gas is leaking from a 5lb steel cylinder.
A copper cube measuring 1.58cm on edge and an aluminum cube measuring 1.68cm on edge are both heated to 56.4 degrees C and submerged in 100.0mL of water at 21.6 degrees C. What is the final temperature of the water when equilibrium is reached? (As..
If the surface area of a human body is 16,100 square centimeters, what is the total weight of the atmosphere on a human body
the ratio of the no of molecules in the excited state at the temperature of 213 K to the number of ground state molecules and the percent of the excited molecules at 213 K.?
The activation energy for a reaction is found to be 80 kj/mol. calculate the temperature at which the rate will be ten times that of 0 deg. celsius.
A balloon with an initial volume of 3.8 L at a temperature of 305 K is warmed to 385 K. What is its volume at the final temperature?
Suppose that a sample of gas occupies 192 mL of volume at 25C and a pressure of 206 torr. What would be the volume if the pressure were changed to 506 torr at 25C.
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