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Compute the number of electrons in a flake of pure gold valued at $0.15. Assume that the price of gold is $1762.0/troy oz. (1 troy oz = 31.1 g)
Sea-level atmospheric pressure is approximately 14.7 pounds per square inch. From this fact, we can deduce that a column of air one square inch in cross-section, measured from sea level to the top of the atmosphere, would weigh approximately 14.7 lb. Given that air has an average molar mass of 28.97 g, calculate the number of moles of air in the column.
A saturated solution of nickel(II) sulfide contains approximately 3.6 multiplied by 10-4 g of dissolved NiS per liter at 20°C. Calculate the solubility product Ksp for NiS at 20°C.
Determine if the concentration of formaldehyde and methanol as measured in water will convert to its relative organic acids? If there is a measured concentration of formaldehyde and methanol in a 1000L solution of water at temperature = 180 degrees..
Use a solubility table to predict which of the following combinations of ions would produce a precipitate for the following and write complete net ionic equation for each reaction.
You are an EH&S professional returning home from your plant on a summer Friday afternoon at about 4 p.m. You have just picked up some materials from a nearby building supply store for a weekend backyard project
a laboratory animal exercised on a treadmill that was connected to a weight with a mass of 256 g through a pulley. the
The element X occurs naturally to the extent of 20.0% superscript 12X and 80.0 % superscript 13X. The atomic mass of X is nearest:
A+B+C =D The rate law for this reaction is Rate=k [A][C] 2/[B]^1/2 Suppose the rate reaction at certain initial concentration of A, B, and C is 1.14*10^-2 M/s.
Why are the bond angles for CH3CH2CH3 approx. 109 degrees. Why is it Tetrehedral when it has 10 electron domains
For a reaction at equilibrium, which of the following is the best way to think about it?
Draw the skeletal structure, where each atom obeys the octet/duet rule and no atom possesses a formal charge, for the molecule whose condensed structure is
Calculate the work, w, and energy change, ?Urxn, when 20.51 g of Cu2O(s) is oxidized at a constant pressure of 1.00 bar and a constant temperature of 25°C.
how many grams of sodium fluoride used in water fluoridation and manufacture of insecticides are needed to form 485 g
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