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problem- a 537 g ice cube at -19 c is dropped into an insulated cup containing 1250 ml of hot water at 78 c the
problem- if magnesium is burned under pure nitrogen a black powder mg3n2 is produced why then is the product gray when
problem- 1 fill in the following as to molecular or ionic compoundscompound is a metal and a nonmetalcompound is
problem- ammonium nitrate is soluble in water 1650g of ammonium nitrate is added to an adiabatic calorimeter containing
problem- a metal whose threshold frequency is 671 1014 s-1 emits an electron with a velocity of 695 105 ms when
problem- a 500 ml ampule of a 0100 m solution of naphtalene in hexane is excited with a flash of light the napthalene
problem- how many liters of o2 will be produced at a temperature of 37 c and 1520 torr if 2 moles of kclo3 decompose
problem- an electron in a hydrogen atom relaxes to the n4 level emitting light of 157 thz what is the value of n for
problem- what is the volume occupied by 234g of argon gas at a pressure of 148atm and a temperature of 414ki need
problem- using the reaction that generates o2 shown below how many grams of kclo3 is needed to generate 2000 l of
problem- a weather balloon with a volume of 2000 l is launched at 20oc and 106 atm the balloon rises to an altitude of
problem- 1 calculate the heat required to sublime of 940 g of solid co2 at the normal sublimation temperature delta h
problem- calculate the heat required to change the temperature of 190 g of co2 g from 300 k to 320 k at 1 atm pressure
problem- halfway through his conservation of mass experiment a joe e cool realized that he forgot to weigh his crucible
problem- 1 which has a higher mass percent of magnesium mgo or mg3n2 answer mg3n22 if the formation of magnesium
problem- a solution of h2so4 with a molal concentration of 194m has a density of 1119gml what is the molar
problem- what is the molar mass of a nonpolar molecular compound if 552 grams dissolved in 360 grams of benzene begins
problem- what is the freezing point of a solution containing 478 grams naphthalene molar mass 1282 gmol dissolved in
problem- citric acid c6h8o7 is a triprotic acid found naturally in lemon juice and it is widely used as a flavoring in
problem- if the density of ocean water at a depth of 10000 m is 1071 gml and if 21 g of water at that depth contains
problem- the rate constant for a first order reaction is 120 x 10-2 s-1 at 45 degrees celsius and an initial
problem- at 25 degc and 795 torr carbon dioxide has a solubility of 00356 m in water what is its solubility at 25 degc
problem- a researcher attempted this reaction with h2so4 instead of h3po4 and noticed a 3rd product how did this