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Take element Z = 57 from the periodic table. Ionize it 56 times so that there is only one electron left orbiting around the nucleus. What is the ground state energy of the electron
Dry air (0% humidity) is approximately 78% N2, 21% O2, and 1% Ar by moles. Calculate the molar mass and density of dry air at 0 °C and 1.0 atm. Assume ideal behavior and use two significant figures in your answers.
How many calories are required to raise the temperature of 125.0g of water from 50.0 degrees c to 95.0 degrees c?
If the Ksp of Fe(OH)2 is 7.9 × 10-16, what is the maximum [Fe2+] that can coexist with these solutes in the solution?
How many Joules of energy are stored in 1 pound (454 g) of sucrose? (Assume: Pressure = 1 atm, Temperature = 25°C; the respective ?Hf° for the reactants and products can be found in the thermodynamic table linked above. Show your calculation
Compute the number of moles of Chlorine atoms in 3.01×10^24 formula units of magnesium chloride,MgCl2 .
A 27.0-g sample of water at 250. K is mixed with 47.0 g water at 310. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Treatment of 2-cyclohexenone with HCN/KCN yeilds a saturated keto nitrile rather than an unsaturated cyanohydrin. Show the structure of the product, and propose a mechanism for the reaction.
The osmotic pressure of a aqueous solution of a given polymer with mass concentration 0.300 g/mL is 10.0 torr at 298 K. Estimate the molar mass of the polymer.
Copper has a specific heat of 0.092 cal/(g·°C). When 52.7 cal of heat is added to a piece of copper, the temperature increases from 22.4°C to 38.6°C. What is the mass of the piece of copper
an aerosol can holds 0.35 L at 4.5 atm pressure. What is the volume when the gas is released into 1.0 atm pressure.
Compute the mass of salt required to bring the freezing point of 200 mL of H 2 O from 0 degrees C to -5 degrees C.
Consider the case of 10 oscillators and eight quanta of energy. Determine the dominant configuration of energy for this system by identifying energy configurations and calculating the corresponding weights. What is the probability of observing the..
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