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What is the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency? 1.5*10^15 Hz
How many ATOMS of xenon are present in 3.25 moles of xenon trioxide. How many MOLES of oxygen are present in 9.37E+22 molecules of xenon trioxide
calculate the calorimeter constant if 25 g of water at 60c was added to 25 g of water at 25c with a resulting
Sodium hydroxide (NaOH) has a lattice energy of -887 kJ/mol and a heat of hydration of -932 kJ/mol.
Explain how the calculated percent NaHCO3 and Na2CO3 by mass would be affected if the initial mixture were wet with water.
An 11 liter tank is filled with 80 moles of air at at pressure of 203 bar. What is the temperature of the air in the tank in degrees Celsius
Calculate the excluded volume for one mole of molecules, which is the constant b. How does this compare with the sum of the volumes of 1 mole of the same molecule
How long would it take the same number of moles of Ar(g) to effuse through the same membrane?
four beakers containing potassium nitrate dissolved in water are allowed to evaporate to dryness. beakers 1 through 4
Consider a system with four energy levels: 0E, 1E, 2E, 3E, where E is kT (E can be represented by epsilon and T is 100K). Assume that there are 10 particles. Provide an expression for energy, heat capacity and entropy. Plot all as a function of T
the critical constants of ethane are pc 48.20 atm vc 148 cm3mol and tc 305.4 k. calculate the van der waals
I take 250.0 mL of 0.250 M sugar and mix it with 500.0 mL of 0.100 M NaCl. What is the concentration of sugar in the mixture. What is the concentration of NaCl in the mixture
Formic acid (HCOOH) is secreted by ants. Calculate [H3O+] for a 7.80E-3 M aqueous solution of formic acid (Ka = 1.80E-4).
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