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A sunscreen preparation with a density of 2.82 g/mL contains 3.55% by mass zinc(II) oxide. Each tube is filled with 185.0 mL of sunscreen. If you are the manufacturer and use 5.00 lb of zinc(II) oxide, how many tubes of the sunscreen would you prepare?
The nuclide As-76 has a half-life of 26.0 hours. If a sample of As-76 weighs 344 g, what mass of As-76 remains after 538 minutes.
How many kilograms of CO2 are produced from the complete combustion of 1.00L of gasoline assume that the gasoline has the formula C8H18.
How much 0.20mol/L sodium hydroxide should be combined to this buffer to raise the pH to 5.1? If the same amount of 0.20 mol/L sodium hydroxide were combined to 250mL of deionized H 2 O, Determine New pH?
What volume of .250 M NaOH is required to neutralize a 10mL sample of .750 M HCl.
What technology or combination of technologies would you recommend for treating the following contaminated air streams?
Find the partial pressure and concentration of Nitrogen, Oxygen, and Carbon dioxide.
What is the osmotic pressure of human blood at 37°C if human blood is isotonic to 0.16 M NaCl solution? Remember that NaCl almost completely ionizes in water.
What volume (in mL) of a 1.420M NaOH solution is required to titrate 25.0mL of 4.50M HCl solution.
In a flame test in the lab, the compound Barium Chloride and Barium nitrate have ions, what are the cations and anions for both.
Lead thiocyanate, rm Pb(SCN)_2, has a K_sp value of 2.00 times 10^{-5}.Calculate the molar solubility of lead thiocyanate in 1.00 it M rm KSCN.
Calculate the final temperature of 204 mL of water initially at 35 degrees C upon absorption of 18kJ of heat.
compute the water volume that is released upon its total metabolism to carbon dioxide and H 2 O, taking into account any oxidative phosphorylation that might occur.
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