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When light of frequency 6.88×1015 s-1 shines on the surface of a metal, electrons are ejected with a maximum kinetic energy of 3.40×10-19 J. Calculate the wavelength of this light.
how many grams of lithium bromide must be added to 35 grams of water to make a solution
identify the following as characteristic of a solution, colloid, or suspension: a)particles of this mixture remain inside a semipermiable membrane, but pass through filters. b)the particles of solute in this mixture are very large and visible.
Draw the chemical structure of a molecule of your design that meets all of the following requirements while also being chemically 'reasonable' ('reasonable' based on a general chemistry, Chem 110/112 knowledge of chemical structure and bonding).
Identify the weaker acid in each of the following pairs: a)HNO3 or HCO3^- b)HSO4^- or H2O c)H2SO4 or H2CO3
based on the experament of bromination of acetinilde how many equivalents of CAN of 0.00555 moles relative to acetanilide moles of 0.00381 show your calculation
What is the oxidizing agent?
What mass of NaOH (s) must be added to 1.0 L of 0.050 M NH3 to ensure that the percent ionization of NH3 is no greater than 0.0010%? Assume no volume change on addition of NaOH. Kb NH3=1.8 x10^-5
What is the molar solubility of CaF2 in 0.10 M NaF solution at 25°C? The Ksp for CaF2 is 1.5x10^-10.
Calculate the freezing point and boiling point of the solution. Kf benzene = 5.12 C/m Kb = 2.53 C/m
Write a balance equations for both half-reactions for the redox. combine them to determine the overall balanced
A 21.10 g sample of liquid ethanol is initially at -36.90 oC. If the sample is heated at constant pressure (P = 1 atm.), how much kJ of energy are needed to raise the temperature of the sample to 100.60 oC.
Describe how you would prepare each of the following aqueous solutions. - 230 g of a solution that is 0.60 molal in Na2CO3 starting with the solid solute.
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