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A bag contains a mixture of copper and lead BBs. The average density of the BBs is 9.90 Assuming that the copper and lead are pure, determine the relative amounts of each kind of BB.
calculate the freezing point of a nonionizing antifreeze solution containing 388 g ethylene glycol, C2H6O2 and 409 g of water.
acid precipitation is the term generally used to describe rain or snow that is more acidic than normal. one cause of
air is about 78 nitrogen and 21 oxygen molecules. severalother gases make up the remaining 1.what is the partial
Acetone, a common laboratory solvent, has DeltaHvap = 29.1kJ/mol and a normal boiling point of 56.2 C. At what temperature (in C) does acetone have P_vap = 117 mm Hg
Calculate the concentration of bicarbonate ion, HCO3 -, in a 0.010 M H2CO3 solution that has the step wise dissociation constants Ka1 = 4.3 × 10-7 and Ka2 = 5.6 × 10-11.
The acid-dissociation constants of sulfurous acid (HeSO3) are K a1 =1.7 x 10^-2 and K a2 = 6.4 x 10^-8 at 25.0 °C. Calculate the pH of a 0.163 M aqueous solution of sulfurous acid.
You are the chief environmental officer of an industrial operation of your choosing. Describe your operation, its different components or stages, the materials used and the type of wastes generated.
used as a fixer in the field of photography. Calculate the percentage composition, by mass, of each element in sodium thiosulphate.
using the balanced reaction enter the formula chargeif any and state of the species exclude h2o in solution if neither
calculate the percentage error likely to arise in an experiment if 1-ml 5-ml and 10-ml are used to transfer and each
A typical frostless refrigerator uses 655 kWh of energy per year in the form of electricity. Suppose that all of this electricity is generated at a power plant that burns coal containing 3.0% sulfur by mass
question which one of the following would furnish the highest yield of a methyl ether on reaction with naoch3 under
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