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A compound is known to contain only carbon, hydrogen and oxygen. Explain if the complete combustion of a 0.150g sample of this compound produces 0.225g of CO2 and 0.0614g of H2O explain what the empirical formula of this compound is
Calculate the minimum concentration of Cr3+ that must be added to 0.095 M NaF in order to initiate a precipitate of chromium (III) fluoride. (For CrF3, Ksp = 6.6 x 10-11.)
Calculate the [H3O+] of a solution that has an [OH-] of 0.000 0060M. Is the solution acidic, basic, or neutral? (show answer in two decimal points).
when an atom or group of atoms is substituted for an h in benzene c6h6 the boiling point changes. explain the order of
Using Hess's Law and the enthalpies of fusion and vaporization of WATER calculate the theoretical value of the heat of sublimation of WATER.
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 99% of the Mg2+ be precipitated as the hydroxide salt? (Ksp for Mg(OH)2= 8.9 x 10 -12.)
Depict all structural and geometric (cis/trans) isomers resulting from the dichlorination of 1,1-dimethylcyclopropane. Place geometric isomers next to each other
Calculate the density of xenon gas at 182 oC and 605 torr. Use R = 0.0821 L-atm/mol-K for the value of the gas constant.
the following statements is incorrect for the reaction between nitrogen (II) oxide and oxygen below
a mixture of three moles of oxygen o2g and six moles of hydrogen h2g is placed in a sealed evacuated container made of
Show how each of the following errors would affect (increase, decrease or no change) your calculated value for the molar volume of O2 at STP (Presuming that you complete the experiment otherwise correctly).
using this equation N2(g)+3H2(g)-->2NH3(g) if 10500 L H2 gas is reacted with an excess of N2 gas at 200 atm and 500 degrees how many moles of ammonia gas would be produced, assuming a 15% yield
Consider two analgesics derived from salicylic acid: acetylsalicylic acid (aspirin) and methyl salicylate (oil of wintergreen, found in muscle relaxants like "BenGay").
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