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helium gas at constant pressure of 74 atm expands in volume from 213 l to 792 l the temperature is held at 278 k
what are the oxidation number of the central atom of the following species please explain how to do
for the following precipitation reactions calculate how many grams of the first reactant are necessary to completely
hard water often contains dissolved ca2 and mg2 ions one way to soften water is to add phosphates the phosphate ion
two acids each approximately 001 m in concentration are titrated separately with a strong base the acids show the
how do i write the chemical equations to the following descriptions the answers are already known i just need
a 101 ml sample of vinegar which is an aqueous solution of acetic acid hc2h3o2 requires 162 ml of 0474 m naoh to reach
please do not respond to this post as this is a duplicate post the same question has been posted twice by mistake and
which of the following processes is necessarily driven by an increase in the entropy of the surroundingsthe
although aluminium chloride is ionic in the solid state it is molecular in the gaseous state write the lewis structure
write the lewis structure prepare a vsepr sketch describe the geometry prepare a vb sketch and describe teh bonding in
1 determine the molecular geometries of the following moleculesch2cl2cl2o2 how many unpaired electrons are there in the
assume you dissolve 0279 g of the weak acid benzoic acid c6h5co2h in enough water to make 191 102 ml of solution and
given the equilibrium constant kp of 240 x 10-3 at 1000 k for n2g 3h2g equation 2nh3g what is the equilibrium constant
hydrogen chloride reacts with oxygen to yield chlorine and water an equilibrium can be established with this reaction
calculate the ph of a solution prepared by mixing 250 ml of 010 m hcl and 250 ml of 025 m
if the ka for the acid phenol call it hp is 13 x 10-10 what is the pka of the phenolate ion
a solution of nh4cl is prepared and its molarity is 100 x 10-3 what is the ph of this solution show all
calculate the change in ph to 001 ph units caused by adding 10 ml of 217-m naoh is added to 470 ml of each of the
0035 moles of so2 0500 moles of so2cl2 and 0080 moles of cl2 are combined in an evacuated 500 l flask and heated to 100
consider the reactioncsco2g2cog hdeg1198kjnow after each change below write an r if you believe the reaction will go to
calculate the minimum concentration of cr3 that must be added to 0095 m naf in order to initiate a precipitate of
a buffer solution is prepared by adding 15 g each of benzoic acid and sodium benzoate in 1500 ml of solutiona what is
the ksp for gdoh3 is 18 x 10-23 what would be the ph of a solution that contains 001 m
the ksp of agi is 83 x 10-17 what is the molar solubility of agi in a 010 m agno3 solution what principle does this