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when 500 g of butane c4h10 g burns in oxygen 247 kj of heat are released what is deltah for the following
ammonium nitrate is produced by the reaction of ammonium hydroxide a weak base with nitric acid a strong acid kb for
if you have a 625ml solution of 14 m formic acid how many milliliters of 125 m naoh would you need to reach the 12
two plastics that are targeted for recycling from household waste are polyethylene terephthalate pete and high density
what is the volume at stp of a sample of co2 that has a volume of 750 ml at 300 degree celsius and 680
a non-polar molecule of an unknown molecular mass is dissolved in benzene when 125 g of this substance is used to make
pure ethanol boils at 78degc but an ethanol solution containing glycerol condensed formula ch2ohchohch2oh does not if
the vapor pressure of water at 60degc is 0196 atm in order to reduce the vapor pressure to 134 torr 1 atm 760 torr how
nicotine molecular weight 163 g is a liquid completely miscible with water at temperatures below 60degcanbspwhat is
if the human eye has an osmotic pressure of 800 atm at 25degcanbspwhat concentration of non-dissociating solute
1 compare the dipole moments of pcl5 and brf5 discuss and explain2 draw a 3-d sketch using the wedge-and-dash
when doing a titration why should the rules for significant figures b used when calculating the concentration of the
1 hydrocarbons and their derivatives are organic compounds that contain carbon and hydrogen and they easily undergo
bombardment of aluminum-27 by alpha particles produces phosphorus-30 and one other particle write the nuclear equation
a 250-l sample of a colorless gas at stp decomposed to give 250 l of n2 and 125 l of o2 at stp what is the colorless
81 a balloon filled with helium gas is found to take 6 hours to deflate to 50 of its original volume how long will it
win 4261 g of a-hydrocarbon cxhy were burned in a combustion analysis apparatus 1337 g of co2 and 5474 g of h2o were
given the following equation2 mg o2 rarr 2 mgoif 4 moles of mg completely react how many moles of magnesium oxide can
you need to make 130 l of a sulfuric acid solution that has a concentration of 0750 m if you are going to use 90 m as
the titration used 00861 m naoh to titrate a 126 g sample of the unknown acid dissolved in 5000 ml of water what is the
having trouble finding the formulas to answering this question if someone could help me i would appreciate itwrite the
a layer of peat beneath the glacial sediments of the last ice age has a carbon-14carbon-12 ratio that is 214 of that
for the following unbalanced reaction cog o2co2ga balance the equationb at 30 degrees celcius the equilibrium
consider the following reaction between acetic acid and sodium hydroxide naoh ch3cooh----------gt nach3coo h2oa