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Problem- Cesium metal is frequently used in photoelectric cells because the amount of energy necessary to eject electrons from a cesium surface is relatively small -only 188 kJ/mol. What wavelength of light (in nanometers) does this correspond to?
Please demonstrate the entire work. I am thanking you in advance
Consider two samples of liquid: one mole of water H2O and one mole of ethanol C2H5OH. The density of water is 1.0 g/mL, and the density of ethanol is 0.785 g/mL. Answer each of the following questions by selecting the correct choice.
Suppose a student mixed 60.6 g of toluene with 48.8 g of nitric acid and recovered 11.5 g of TNT. Find out which was the limiting reagent and Compute the percent yield of the reaction
A chemical reaction produces 1.77 moles of oxygen gas at 27 degrees Celsius and 0.933 atm. What volume in liters would this sample occupy
Given that the density of aluminum is 2.70g/cm^3, What maximum length of aluminum lil can be made from 1.10 kg of aluminum?
The piston is working against a pressure of 0.500 atm. The final volume of the system is 58.0 L. Explain what was the initial volume of the system if the internal energy of the system decreased by 102.2 J
calculate the change in entropy when 25KJ of energy is transferred reversibly and isothermally as heat to a large block of iron at (a) 0C and (b) 100c.
Find out q for the acid-base reaction, presuming that the liquid a have densities of 1.00 g/mL and the same heat capacities as pure water
The two half-cells are connected by a salt bridge. Aluminum metal is oxidized during operation of the voltaic cell. What is the half-reaction that occurs at the cathode
Another common polymer is polystyrene. Its monomer, styrene, is shown below. What kind of polymerization reaction occurs in the formation of amylose. Polystyrene.
A 2.0 L glass soda bottle filled with air is tightly capped 18degC and 686mmHg. If the bottle is placed water at 95degC, what is the pressure in the bottle
A solution of ethylene and water has a boiling point of 109.8C. What is the freezing point
Does doubling the volume (not concentration) of acid and base double the amount of heat produced in a neutralization reaction
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