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the ka of a certain indicator is 60 x 10 -6 the color of hln is green and that of ln- is red a few drops are added to a
starting with benzene outline a synthesis of each of the following many of the answers will require more than one stepa
1 global warming refers to the rise in average global temperature due to the increased concentration of certain gases
if the asteroid fragment contains carbon it may burn when entering the earths atmosphere what is the most likely
determine the wtvol of fluoride in toothpaste if the calculated molarity is 0002491 m the actual value is 015 so it
what effect do you think the 5 efficiency will have on your decision whether to use photovoltaic cells as an energy
the absolute maximum efficiency for a perfect solar cell in tightly controlled laboratory conditions is 30 whereas a
what do you think is the basis for the selective response of a solar cell to certain wavelengths hint energy
a solution is prepared by dissolving 108g ammonium sulfate in enough water to make 100 ml of stock soultion a 1000 ml
a gas of twice the molecular weight as co2 will pass through a small hole how much faster than
assuming ideal gas behavior which of the following gases would have the lowest density at standard temperature and
a 500ml canister of freon-12 cf2cl2 was heated in boiling water 1000ordmc until the canister burst if the canister was
number of stereoisomers possible for each of the following substances draw them and name each by the r-s and e-z
if 4800x 10-5 mol of uranium-238 will effuse through a hole in 125 seconds how many mol of uranium-235 will effuse
a 40l sample of n2 g at 760 mmhg is compressed at constant temperature to 32atm what is the final gas
two containers are connected by an open tube one container a is at 300k the other b is at 600k these two containers
lakes that have been acidified by acid rain can be neutralized by the addition of limestone caco3 how much limestone in
a sample of helium gas occupies a volume of 38l at 780 torr and 25ordmc what volume would the gas occupy at standard
butane c4h10 is used as a fuel where natural gas is not available how many grams of butane will fill a 350 liter
under conditions for which chlorine gas has an effusion rate of 24x10-6 mol sec-1 what would be the effusion rate for
write net bronsted equations and determine the equilibrium constants for the acid-base reactions that occur when
an automobile tire at 320 psi at 250ordmc is driven on a trip at the end of the trip the pressure is 350 psi what is
the specific heat of solid gold is 013 jg c how much heat is needed to raise the temperature of 250 g of gold from
a sample of n2 g effuses through a tiny hole in 190 s how long would it take for a sample of n2o2 g to effuse under the
a sample of oxygen gas is collected over water at 23ordmc at a barometric pressure of 751 mmhg the vapor pressure of