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hypochlorous acid hclo has a pka of 752 what is the value of the acidity constant for this acid enter your result to 3
derive the integrated form of the rate laws and the half-life for azero order and bsecond order for the simple
if your front lawn is 24 ft wide and 20 ft long and each square foot of lawn accumulates 1450 new snow flakes every
the recommended adult dose of elixophyllinreg a drug used to treat asthma is 6 mgkg of body mass calculate the dose in
the mens world record for swimming 15000 m in a long course pool is 14 min 3456 s how many seconds would it take to
an artist statue has a surface area of 146 feet squared the artist plans to apply gold plates to the statue and wants
the speed of light in a vacuum is 2998x108 ms what is the speed of kilometers per hour what is the speed in miles per
a solution is prepared by dissolving 258 grams of magnesium chloride mgcl2 in 2500 ml water calculate the molality of
calculate the content or concentration for each substance in the following mixturesa a solution that contains 250 ml of
a pound of coffee beans yields 50 cups of coffee 4 cups 1 qt how many milliliters of coffee can be obtained from 8 g
benzene is an organic liquid that freezes at 55 degrees celsius how much heat is evolved when 255g of benzene freezes
the molar heat of fusion of water is 601kjmol how much heat energy is required to melt one ice cube in a soft drink to
the recommended daily allowance rda of calcium is 1200 mg calcium carbonate contains 12 calcium by mass how many grams
the density of magnesium is 17 gcm3 and the density of iron is 79 gcm3 consider a block of iron with a mass of 819 g
a 9911 g sample of a highly radioactive element is determined to contain 04271 mol of the element what is the
plot boiling point bp y-axis versus molecular weight mw x-axis for the first four compounds listed in the table
the x rays used for both scientific and medical applications are usually produced by making high-velocity electrons
the following data have been obtained for oxygen gas at 27315k calculate the best value of the gas constant r from them
using the de broglie and planck-einstein formulas and considering a a helium atom with a kinetic energy of 00025ev ie
write the empirical formula for at least four ionic compounds that could be formed from the following ionsco3 2- anion
yellow-gold is an alloy that is 7500 gold1600 silver and 900 copper by mass calculate the cost of the gold in a cube of
an optical fiber for something is made sio2 glass density 22 mgm3 how many si atoms and how many o atoms are present
each square meter of an actively growing forest fixes on a average each year 1 kg of carbon from the atmosphere into
shells of mussels clams are mainly of calcium carbonate usually the shell is stable and its content is in equilibrium
iron has a density of 787 gcm3 what mass of iron would be required to cover a football playing surface of 120 yds times