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the pesticide parathion is applied to a field on a sunny day parathion reacts via photolysis sunlight with water
1 if the water is in equilibrium with the co2g in atmosphere what is the ph of the water given henrys constant kh
a rock originally had 4800 atoms of 40-k and no 40-ar it now has 400 atoms of 40-k assuming that the only chemical
you have determined that your sample is an ester with a molecular mass of approximately 104 gmolnbsphow many c and o
the d line in the spectrum of sodium is a doublet at 5890 and 5896 nm calculate the minimum number of linesmm needed in
what isnbsphundsnbsprule give a definition of the rule and a description of
you want to store 140nbspg ofnbspnbspgas in a 179-l tank at room temperature 25 degc calculate the pressure the gas
a calculate the molar gibbs energy of mixing for an inert gas mixture of argon and neon with mole fractions 08 and 02
given a 1200 groovemm grating an angle of reflection less than 20 and a focal length f 500 mm what is the effective
consider these compoundsanbspba3po42bnbspfescnbspca3po42dnbspagohcomplete the following statements by entering the
state two physical properties of materials which assist in the identification of the material as organic or inorganic
the density of water at 0 degc is 09987 gcm3 the density of ice at this same temperature is 0917 gcm3calculate the
write the balanced chemical for the double replacement reaction which occurs upon the mixing of solutions of sodium
what is the mass grams of ammonia produced when 585 g hydrogen and 280 g nitrogen react to form
in the haber process used industrially to produce ammonia in massive tonnage nitrogen reacts with hydrogen to form
question 1 the standard enthalpies of formation at 2500nbspoc of methanol ch4ol water h2ol and carbon dioxide co2g are
1 the average molecular speed in a sample ofnbspnbspxe gas at a certain temperature isnbsp212nbspmsthe average
d-glucose is known to exist in two forms alpha and beta which interconvert slowly but surely at 300 k 62 of d-glucose
explain why no net heat is given off or absorbed when two dilute aqueous solutions are mixed
a beam of electrons m 911 times 10-31nbspkgelectron has an average speed ofnbsp16nbsptimes 108nbspms what is the
1 ammonium carbonate decomposes upon heating according to the following balanced
question 1for the reactionaaq ---gt baqthe change in the standard free enthalpy is 341 kj at 25nbspoc and 546 kj at
question 1 the reaction aaq ---gt baq is a first order reaction with respect to aaq the concentration of aaq is reduced
question 1 the solubility product ksp of cd3po42nbspis 25 x 10-33 what is the solubility in gl of cd3po42nbspin pure