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give the enthalpies of the reactionp4 s 3o2g--gtp4o6s delta h -16401 kjp4 s 5o2 g---gtp4o10 s delta h -29401
an open container holds 0550 kg of ice at - 150 degree celsius the mass of the container can be ignored heat is
1 hcl is a significant component of gastric juice what is the concentration of chloride ion in gastric juice at ph1272
a 5 kg aluminum block sits in your lab which is at 21 c you wish to increase the temperature of the block to 50 c how
1 what ir peaks were the major ones that allow you to determine from your ir analysis which alcohol stereoisomer endo
how many grams naoh must be added to 250ml of 10m hc2h3o2 in order to bring ph to
calculate the consentration of cn- and the ph for a solution that is made by mixing 50ml of 01m hcio4 with 42ml of
1 a what factors could cause deviations from beers law at high concentrations of soluteb why does beers law hold more
the molar mass of hcl is 365 gmol and the average mass per hcl molecule is 365 amu use the fact that 1 amu 16605
summarize the 5 different changes of matter according to the graph solid to gas explain in detail how each state occurs
5 cs 2 so2g producing cs2l 4 cog 1 how many moles of carbon are needed to react with 413 mol so2 2 how many moles of
a solution is prepared by dissolving 27g urea in 150g water calculate the boiling point of the solution urea is a
could someone please help explain the cubic equations of state as well as an example using van der waals and
a solution is prepared by dissolving 267 g of sucrose c12h22o11 in 624 g of water what is the vapor pressure of this
if a 0135g sample of nacl were placed on an ion-exchange column in the h form and the eluate titrated with 01231 m naoh
a 01500 g sample of pure zncl2 x nh2o was place on an ion exchange column in the h form the h released in the eluate
suggest two possible byproducts excluding water of the reaction between dibenzyl ketone and benzil in the presence of
could you please help me solve this problem because i am stuck on it the one that i am having trouble on is in the
gold can be hammered into extremely thin sheets called gold leaf if a 197-mg piece of gold density 1932 gcm3 is
calculate the ion activity product iap and saturation index si of this water with respect to the minerals rhodochrosite
show mechanism of oxime formation through aminoalcohol using arrows to provide a mechanistic explanation of the course
show multistep reduction mechanism of reduction of aldehyde show how all four hydrogens in sodium borohydride can act
what is the molarity of a sodium hydroxide solution if 3426 ml react with 0337g of sulfamic
rutherford and his co-works found that radium a radioactive element disintegrates and emits he nuclei know as
you recrystallize 10 g of impure naphthalene from ethanol at sea level and recover 74 g pure naphthalene if you were to