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Problem- A 2.135 sample of gaseous chlorofluorocarbon occupies a volume of 315.5 mL at 739.2 mm Hg and 26.1 degrees C. Analysis of the compound shows it to be 14.05% C, 41.48% Cl, and 44.46% F by mass. Find the empirical formula and then the molecular formula of the compound.
Please answer only if you are 100% confident
The complete combustion of propane, C3H8(g), is represented by the equation: C3H8(g) + 5 O2(g) ? 3 CO2(g) + 4 H2O(l) ?H° = -2220 kJ How much heat is evolved in the complete combustion of 12.5 L C3H8 (g) at 25°C and 790 mmHg
For the 0.01 M NaOH and 0.001 M NaOH solutions in Part A, do your calculated values of [OH-] agree with those you would predict using the dilution equation. M1V1=M2V2, where M1= the calculated [OH-] of the 0.1 M NaOH stock solution.
Match the detector or detectors that can be used in gas chromatography for the detection of the following list of analytes. (More than one detector may be appropriate for a given analyte, and a given detector may be appropriate for more than one g..
Choose the correct equation for the standard enthalpy of formation of CO(g), where change Hf for CO= -110.5kJ/mol? (gr indicates graphite)
What volume of 0.85 mol/L Na2S2O3 is required to titrate the I2?
Problem- Starting with 0.290mol SbCl3 and 0.160mol Cl2, how many moles of SbCl5, SbCl3, and Cl2 are present when equilibrium is established at 248?C in a 2.50?L flask
Hexane has a density of 0.659 g/mL. How many milliliters would a student need to pour in order to get 49.5 g of hexane?
A cylinder contains 12.0l of air at a total pressure of 41.4psi and a temperature of 30c. How many moles of gas does the cylinder contain
The other criterion is very basic and relates to whether simple or fractional is selected
Calculate the number of moles of B at each time in the table. 0 s mol 40 s mol 80 s mol 120 s mol 160 s mol (b) Calculate the average rate of disappearance of A for each 40 s interval, in units of mol/s. 0 - 40 s mol/s 40 - 80 s mol/s 80 - 120 s m..
Now suppose you have only added 24.0mL of 0.01M NaOH solution to the 25.0mL of HCl solution, what is the molarity of HCl left in the solution? What is the pH of the resultant mixture?
a litre of solution containing 0.1 m of ch3cooh and 0.1 m of ch3coona provides a buffer of ph 4.74 . calculate the ph
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