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A sample of an unknown gas effuses in 11.9 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.19 min. What is the molar mass of the unknown gas?
Describe the characteristic infrared absorption frequencies that would allow you to distinguish between the following pairs of compounds.
Draw the Lewis structure for each of the following molecules or ions, and predict their electron-domain and molecular geometries.
A solution of 5.0 g/L of HY has the same pH as one containing 10.0 g/L of HZ. Which is the stronger acid. Please explain.
Use resonance structures to show which three carbon atoms bear the unpaired electron.
Trimyristin is one of a number of natural products found in nutmeg, including the one which gives it its characteristic odor. Bases on the chemical properties of trimyristin and the amount of inpurity found when the extracted trimyristin was re-cr..
Calculate the transformation rate for the austenite-to-pearlite transformation at 650 °C and at 600 °C. Show the relationship(s) you used to arrive at your answers.
Calculate the maximum number of moles and grams of H2S that can form when 152 g aluminum sulfide reacts with 147 g water.
what mass of oxalic acid dihydrate, H2C2O4 + 2H2O is required to prepare 280.0 ml of a 1.51 M solution of oxalic acid
The equilibrium constant Kc for the decomposition of phosgene, COCl2, is 4.63 10-3 at 527°C. COCl2(g) CO(g) + Cl2(g) Calculate the equilibrium partial pressure of all the components
The student found that 8.67mL of NaOH solution was needed to titrate a 0.0544g sample of the acid to the equivalence point. Calculate the mass of unknown required for a 30.0mL titration.
What is the volume of the water displaced? (State the correct number of significant digits.) What is the uncertainty in this value?
In which of the following complexes are geometric isomers possible, [Co(H2O)4Cl2]+, [Co(NH3)3F3], [Pt(NH3)Br3]-, [Co(en)2(NH3)Cl]2+, if isomers are possible draw their structures and label them as cis or trans
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