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For many years after they were discovered, it was believed that the noble gases could not form compounds. Now we know that belief to be incorrect. A mixture of xenon and fluorine gases, confined in a quartz bulb and placed on a windowsill, is found to slowly produce a white solid. Analysis of the compound indicates that it contains 77.55% Xe and 22.45% F by mass.
a cook wants to heat 1.37 of water from 27.0 to 100.0 .if he uses the combustion of natural gas which is exothermic to
The nitrate stock standard utilized in this experiment is 1000ppm NO3- prepared by dissolving 163mg of dried KNO3 in 100mL water. NaNO3 can also be utilized if no KNO3 is available. Explain what weight of NaNO3 must be used to make a 100mL solutio..
A pound of coffee beans yields 53 cups of coffee (4 cups = 1 ). How many milliliters of coffee can be obtained from 1 of coffee beans?
If 592.6 g of TATP is combusted in excess oxygen, what volume of gaseous product will be generated at STP.
the equivalence point occurs when 12.75 mL of 0.075M NaOH is added to a solution containing 10mL weak unknown acid and 40mL Deionized water
What is atmospheric pressure in atmospheres in Denver for heat of fusion=40.6kj/mol at 95 degee celsius
What fraction of piperazine (perhydro-1,4-diazine) is in each of its three forms (H2A, HA-, A2-) at pH 8.26?
A 82.2 g sample of dinitrogen monoxide is confined in a 3.2 L vessel. What is the pressure (in atm) at 115°C?
Calculate the pH of each aqueous solution: (a) 0.0066 MHCl; (b) 0.000012 M KOH. Calculate the value of [-OH] from the given [H3O+] in each solution and label the solution as acidic or basic.
Calculate the required quantity of each reagent and the volume of water that must be added for dilution. a. Chlorine water
Predict the structure of the enamine product in the reaction below and show the last step of the mechanism.
Calculate ph of solution formed by mixing 250 ml of .15 M NH4Cl with 100 ml of .2 M NH3. Kb for NH3 at 25C is 1.8x10^-5
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