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a compound of C, H and N cotains three elements in the ratio 9:1:3.5 . calculate emipirical formula of compound . if mol. wt = 108 . what is its molecular formula
The free energy change Delta Gt at 500 K is equal to 9.8x10^4 J/mol. Calculate the equilibrium constant at 500 K.
How many moles of ions are released when 0.27 mol of cobalt(II) chloride, CoCl2, is dissolved in water?
provide the newman projections across the c2-c3 bonds for the major conformers after drawing the zig-zag structures of
Dissolved carbon dioxide from the atmosphere will influence the determination of the equivalence point. Would you expect dissolved CO2 to cause the volume of NaOH necessary to reach the equivalence point to increase or decrease. Explain.
An unknown amount of water is mixed with 300 mL of a 6 M solution of NaOH solution. A 75 mL sample of the resulting solution is titrated to neutrality with 51.7 mL of 6 M HCl. Calculate the concentration of the diluted NaOH solution. Answer in uni..
A mixture is made by mixing 40.7 mL 0.000200 M HCl with 38.3 mL of 0.000180 M NaOH. Based upon these values, the mixture's pH will be
1g soil has been spiked with 0.1ml of 100 ppm (v/v) trimethylbenzene and subsequently extracted with 250 mL pentane. The extract is then measured with GC-FID.
a system receives 93 j of electrical work performs 227 j of pressure-volume work and releases 155j of heat.what is the
The organic compound called aluminon is used as a reagent to test for the presence of the aluminum ion in aqueous solution
A catalyst decreases the activation energy of a given reaction by exactly 15 kJ/mol. By what factor does the reaction rate increase at 25oC when the catalyst is used
Determine the volume(mililiters) required to prepare 200.0ml of a 0.250M KNO3 solution from a 6.00M KNO3
Find the molarity of the original HCI stock. Show your work as outlined in the calculations.
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