What is the percent abundance of each isotope
Silver has two stable isotopes with masses of 106.90509 amu and 108.9047 amu. The average molar mass of silver is 107.868 amu. What is the percent abundance of each isotope?
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Draw the Lewis dot structure for the HI molecule. Give the shape of the molecule in electron-domain geometry and molecular geometry.
The alcohol content of hard liquor is normally given in terms of the "proof," which is defined as twice the percentage by volume of ethanol (C2H5OH) present. Calculate the number of grams of alcohol present in 1.00 L of 51-proof gin. The density o
A 230.0 g piece of lead is heated to 80.0 deg C and then dropped into a calorimeter containing 633.0 g of water that initally is at 16.0 deg C. Neglecting the heat capacity of the container, find the final equilibrium temperature (in deg C) of the
Predict the percentage of each of these products in the mixture (secondary hydrogens are 4.5 times more reactive than primary hydrogens and tertiary hydrogens are 5.5 times more reactive than primary hydrogens during a monochlorination reaction)
Chloroform is an excellent solvent for extracting caffeine from water. KD = 9 for caffeine in chloroform-water at 25 degrees celecius. What weight of caffeine would be recovered from a solution of 4.0 g caffeine in 100 mL water by a single extract
Which of the following is true about the photoelectric effect. a) The number of electrons emitted increases with intensity of light, regardless of the frequency. b) The number of electrons emitted increases with the intensity of light
The equilibrium system H2 + I2 ? 2HI has equilibrium constant K = 6.2. Starting from the nonequilibrium state [H2] = 0.3 M, [I2] = 0.5 M, and [HI] = 0.7 M, what are the concentrations of the three molecules when equilibrium is established
Structure of a compound that, in the presence of a strong base, can readily undergo an intramolecular reaction forming a ring in the product.
What is the molecular equation, total ionic equation, and net ionic equation for Cu(NO3)2 and NaOH
How many Protons, Neutrons, and Electron of 63Li+. What are the mass number and atomic number of each of these atoms
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