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a sample of gas has a pressure of 328 torr while occupying a volume of 86 liters at 25 degrees c if the volume was
sulfur dioxide in the effluent gases from coal-burning electric power plants is one of the principal causes of acid
the following compound has two stereoisomers one has a dipole of 0 d and the other has a dipole moment of 295 d draw
a 15ml solution of potassium nitrate kno3 was diluted to 1250ml and 2500ml of this solution were then diluted to 1000 x
on the basis of oxidation number considerations one of the following oxides would not react with molecular oxygen no
icebergs in the north atlantic present hazards to shipping causing the length of shipping routes to increase by about
0506-kg chunk of ice at 00 degrees celsius is added to an insulated container holding 315ml of water at 202 degrees
1 what amount of energy in joules is necessary to melt a 145 gram piece of ice at 0 c to form liquid water at the same
what is the final temperature in oc after a 260 gram piece of ice at 0oc is placed into a styrofoam cup with 1190 grams
ethanol boils at a temperature of 7829oc what amount of energy in joules is necessary to heat to boiling and then
goldiiioxide au2o3 undergoes a thermal decomposition reaction to form gold metal and oxygen gas write a balanced
in an electrolytic cell cus is produced by the electrolysis of cuso4aq calculate the maximum mass of cus that can be
a 65 gram block of an unknown metal at 850oc was dropped into an insulated flask containing approximately 450 grams of
the specific heat of mercury metal is 0138jgk how much heat in joules is required to heat a 715 gram sample of mercury
why is there a general increase in the first ionisation energies of the period 3 elements na to ar can someone explain
an electrical heater warms 180 g of waterits initial tempearture is 350 c the heater emits 200j of heat each 1 minute
a compound was analyzed and found to be composed of 75 cardbon and 25 hydrogen what is the empirical formula of this
when sulfur trioxide is used in the commercial production of sulfuric acid one part of the process is to first dissolve
1 why do we discuss electrons in terms of the probability of finding them in an orbital instead of in terms of absolute
1 why are there only 8 elements in period 2 and period 32 why are there 18 elements in period 43 what do the elements
the standard electrode potential for the reduction of ni2 to ni is 025vwould the potential of a nickel elctrode
treatment of 1385 g of an unknown metal m with an excess of aqueous hcl evolved a gas that was found to have a volume
identify the correct equilibrium expression for the reaction question 2 options a b c d e save question 3 034