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acetylene c2h2 gas is collected over water at 23degc the total pressure is 745 torr what is the pressure of the c2h2
what current in amps is required to plate out 122 g of nickel metal from a solution of ni2 in 1
at 200 deg c k 0009 for the reaction nh4sh s -gt nh3 g h2s g a sample of solid nh4sh is placed into a container and
a 250 ml sample of 0723 m hclo4 is titrated with a 027 m koh solution what is the ph after the addition of 800 ml of
gaseous phosphorus and chlorine combine to produce phosphorous trichloride p2 g 3cl2 g -gt 2pcl3 g g0 -6429 kj mol-1
how many minutes will it take to plate out 219 g of chromium metal from a solution of cr3 using a current of 352 amps
what is the change in internal energy in j of a system that absorbs 603 kj of heat from its surroundings and has 470
if the concentration of lead iodide pbi2 in a saturated aqueous solution is 15 x 10-3 m what is the ksp of
what is the ph of an aqueous solution prepared by dissolving 0370 moles of formic acid hco2h and 230 moles of sodium
a 250 ml sample of an hcl solution is titrated with a 0139 m naoh solution the equivalence point is reached when 154 ml
what mass of copper in g can be deposited by the passage of 10 a for 40 hr through a solution of
a solution is exposed to air where the partial pressure of n2 is 080 atm and the concentration of n2 in solution is
the poh of a solution containing 030 m of a weak base is 392 what is kb for the
what mass of ar gas in g is contained in a 640 l tank in which its pressure is 0703 atm and the temperature is 640degc
what is the freezing point in degrees celcius of a solution prepared by dissolving 113 g of cano32 in 115g of water the
outline the way in which the health and safety at work act hasaw act 1974 controls work place health and safety compare
two unknowns x and y both having the molecular formula c4h8o give the following results with four chemical tests
the problem gives you- 1-bromo-1-methylcyclohexane and the product is cyclohexanone you have to use two reagents or
a solution of dihydrogenphosphatehydrogenphosphate buffer has a molar ratio of k2hpo4 to nah2po4 of 213 calculate the
does reagent grade sodium chloride affect the ph of an organic solution it seems to have changed the ph of my solution
the molarity of ca2 in a saturated solution of caco3 was determined to be 00000616 m calculate the solubility product
the solubility product constant ksp for the dissolution of pbso4 as represented by the chemical equation is 17x10-8
a buffer solution with a ph of 528 has a molar ratio of anion to acid of 340 calculate the equilibrium dissociation
the molarity of so42- in a saturated solution of srso4 was determined to be 0000500 m calculate the solubility product