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A 7.629 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 11.37 grams of CO2 and 3.492 grams of H2O are produced. In a separate experiment, the molar mass is found to be 118.1 g/mol. Determine the empirical formula and the molecular formula of the organic compound.
An unknown gas effuses through a porous barrier at a rate that is 0.752 times the rate of Ar (g) under the same conditions. Which of the following is the unknown gas. Cl2 (g) He (g) O2 (g) N2 (g) H2 (g)
Aspirin is an organic acid with formula C8H7COOH and molar mass 180.16171 g/mol. A 1.30 g tablet is titrated with 0.1500 M HCl and the endpoint is reached
What is the solubility of AgCl when it is in a solution of 0.15 M NaCl? (AgCl has Ksp = 1.8 x 10-10.) Make a reaction table. Include rows for initial concentration, change in concentration, and equilibrium concentration.
The equilibrium of Fischer esterification reactions in general is slightly towards product formation. The equilibrium can be made more favorable for product formation by all of the following except
A physician treating a patient with megaloblastic anemia might be tempted to treat the patient with folic acid to see if a simple folate deficieny is involved.
Three gases, hydrogen, helium, and krypton are confined in a 10.0 L vessel at a pressure of 6.00 atm. The vessel contains 4.00 moles of hydrogen, 3.00 moles of helium, and 5.00 moles of krypton.
what is the largest alkane number of carbons that can be named not exceeding decane as a parent? where is the primary
To what volume should you dilute 124 mL of an 7.95 M CuCl2 solution so that 49.5 mL of the diluted solution contains 5.8 g CuCl2
Nicotine has an empirical formula of C5H7N and a molecular mass of 162.23. What is the molecular formula for nicotine?
consider this reaction. caco3 s -gt cao9s co2 gwhat mass of caco3 will produce 8.0 l of co2 measured at standard
The activation energy for a particular reaction is 64 kJ/mol. By what factor will the rate constant increase when the temperature is increased from 50 oC to 80 oC
Three compounds, hexane, heptane, and an unknown molecule were separated using gas chromatography. The adjusted retention times were 10.4 min for hexane,
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