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The threshold wavelength for the photoelectric effect for silver is 262nm. What is the work function for silver and what is the maximum KE of an emitted electron if the incident light has a wavelength of 212nm?
A large balloon is initially filled to a volume of 25.0 L at 353 K and a pressure of 2575 mm Hg. What volume of gas will the balloon contain at 1.35 atm and 253
Problem- The equation of line determined from a Beer's Law plot is y = 0.195x + 0.4. What is the concentration of an unknown water sample if the assumed resistance is 650 ohms
Rewrite the following unbalanced equations, changing them into balanced net ionic equations (assume that all reactions are in water solutions)
If 4.21*10^-3 moles of Ca^2+ react with excess PO4^3- to form calcium phosphate, how many moles of the solid will form.
A concentration cell has the same kinds of half-cells, for example Cu?CuSO4(aq), but has a nonzero emf due to differences in CuSO4 molalities. Explain how it is possible for the galvanic cell Cu(s)?CuSO4(aq)?Cu(s), that contains only one CuSO4 sol..
In an acid-base titration experiment, a 0.2 M solution of HCl was titrated at 25°C with a 0.05 M solution o KOH. Here the equilibrium constant for the titration reaction had this value:
One a cold day a person takes a breath of 450 ml of air at a pressure of 745 mm Hg and room temperature of 21oC. What is the volume of this air in the lungs at 37oC and 758 mm Hg?
Which article, pot or water, absorbs more heat during the change. How many total joules of energy are absorbed by the pot and the water during the process
An aliquot of a solution containing a pure beta particle emitter is counted in a liquid- scintillation counter, while an equal aliquot is evaporated and counted with a thin window G-M counter.
write the formula of the conjugate acid for each of the following bases: a)SO4^2- b)CN^- c)CH3-CH2-COO^- d)ClO2^- e)HS^-
a volume 10.0ml of a 0.00550 m solution of cl- ions are reacted with 0.500 m soultion of agno3. what is the maximum
Draw the Lewis structure of the molecule, assuming that the Cl atoms bond to a single C atom and that there is a C -C bond and two C - O bonds in the compound.
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