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a sample of k2s contains 135 g of potassium how many moles of potassium sulfide are present in the
calculate the number of atp molecules that are produced from the biological oxidation of one molecule of each of the
an organic acid contains 414 carbon 347 hydrogen and 551 oxygen by weight a 0080-mol sample of this compound weighs
a sample of oxide of antimony sb contains 305g of antimony combined w10g o2 whats the simplest formula for the
the ka of hno2 is 71 x 10-4 use this to find the volume ml and ph of 00588 m koh needed to reach the equivalence points
what is the ag in a solution at equilibrium when ammonia gas is bubbled through a solution that is 0023m in agno3 until
what volume of 0200 m hcl must be added to 2500 ml of 0300 m sodium mandelate ka for mandelic acid 00004 to produce a
what mass of sodium formate must be added to 4000 ml of 100 m formic acid to produce a buffer solution that has a ph of
what is the freezing point of a 286 by mass aqueous solution of hcl assume the hcl is 100
the combustion of gasoline produces carbon dioxide and water assume gasoline to be pure octane and calculate the mass
a 07995 g sample of a compound containing only uranium and chloride is dissolved in water and excess aqueous silver
what ph is needed to increase the solubility of mnoh2 to 25 x 10-3m ksp for mnoh2 16 x
what concentration of nh3 is needed to lower the cu2aq to 64 x 10-14m in a solution that was originally 143 x 10-4 m in
cyclopropane c3h6 reacts to form propene c3h6 in the gas phase the reaction is first order in cylclopropane and has a
write the balanced equation for the reaction involved in the synthesis of acetanilide from aniline and acetic
a solution is made by combining 150 ml of 180m acetic acid with 550g of sodium acetate and diluting to a total volume
the van der waals equation of state to find the critical temp and pressure for a fluid ive only used it for a gasor is
a solution is labeled 0464 m naclo what are the following in the solution express your concentrations to three
caffeine with a mass of 0104 g was used to prepare caffeine salicylate derivative how do you find the theoretical yield
a solution is prepared by dissolving 019 of acetic acid and 019 of ammonium chloride in enough water to make 10 of
the current dietary recommendation is to consume less than 01 mol of sodium per day one teaspoon of table saltthe
magnesium metal rects with oxygen to make a white powder knon as magnesium oxide as the reaction proceeds a bright
1 how much heat is produced in burning 9 mol of ethylene c2h4 under standard conditions if reactants and products are
you titrate 250 ml of 0110 m nh3 kb 176 x 10-5 with 0100 m hcl what volume of hcl is required to reach the equivalence
a 0050 m h2s solution contains 019 m nicl2 and 035 m hgno32 what ph is required to precipitate the maximum amount of