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presuming the sun can be approximately described as a black body find the surface temperature of the sun if an emitted
to measure ca in brekafsat ceral 05216 g of crushed cheerios was ashed in a crucible the residue was dissolved in 6m
subsequent to 57 min 390 of a compound has decomposed explain what is the half-life of this reaction assuming
one of the steps in the commercial process for converting ammonia to nitric acid is the conversion of nh3 tono4nh3g5o2g
explain what is the solubility of oxygen in water in contact with air when atmospheric pressure is 1 atm the
a treatment plant treats an average daily flow of 16 mgd the influent bod and tss is measured as 225 mgl and 250 mgl
explain how many grams of c2h2 must burn according to the equation below in order to heat 234x104 grams of h2o from 25c
compute the final concentration of h or oh- if 240ml of 195m baoh2 is mixed with 340ml of 230m hcl presume the volumes
aspirin c9h8o4 is prepared by reacting salicylic acid c7h6o3 with acetic anhydride c4h6o3 in the reaction2c7h6o3s
a chemist started with 1 ml of 2 methyl 2 butanoland reacted it with 3 ml concentrated hcl after distillation 03 ml of
while 20 grams of an electrolyte was dissolved in 250 grams of water the resulting solution was found to have a
a certain liquid has a vapor pressure of 920 torr at 230 c and 2360 torr at 450 c compute the value of delta h vap for
at 1 atm explain how much energy is required to heat 570 g of h2os at -200 c to h2og at 1390
a mixture of oxygen and hydrogen is examined by passing it over hot copper oxide and through a drying tube hydrogen
a solution is prepared by mixing 0275 mole naoh 400gmole with 189g h2o 180gmole its density is 1061 gmldeterminea the
uric acid dissociates as shown in the figure at the right with a pka of 580 as well as can be treated as a simple
define why a significant excess of sodium borohydride nabh4 is used to reduce aldehyde compounds containing additional
explain what is the theoretical yield of 1 4-di-t-butyl-2 5-dimethoxybenzene mw 25038 gmol if 132 g of 1
compute the mass in g of precipitate formed when excess sodium hydroxide is added to 425ml of 155 magnesium nitrate
depict the major neutral organic product obtained if a the reaction proceeds by the sn1 mechanism b the reaction
the coinage metals -- copper silver and gold -- crystallize in a cubic closest packed structure utilize the density of
a nonideal gas obeys the equation of state pvmrtalpha x p where alpha is a function of t only an investigator obtains
the equation of state of a nonideal gas is pvm 1-alpha x p rt where alpha is a function of temperature only acquire an
a gas obeys the van der waals equation of state the critical parameters for this gas are pc477 atm tc15115k and vc00752