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When a 0.6333-g sample of a compound of carbon, hydrogen and sulfur was burned in excess oxygen, 0.9272 g CO2, 0.3795 g H2O and 0.6749 g SO2 were obtained. In a separate experiment, it was found that, for fixed temperature and pressure, a 0.100 L sample of this compound takes 1.73 times longer to effuse than does a 0.100 L sample of Ar(g). What is the molecular formula of the compound? Draw possible structures for the molecule.
A metal sulfide, M_2(CO_3)_3, has a K_sp of 5.35*10^-42. What is the molar solubility of this sulfide in water. Assume the sulfide behaves ideally
Select the gas with the largest root-mean-square molecular speed at 25°C. a. NH3 b. CO c. H2 d. SF6
if a sodium hydroxide solution were added to a solution containing leadii ions sodium ions nickelii ions and potassium
One of the most historically significant studies of chemical reaction rates was that by M. Bodenstein (Z. Physik. Chem. 29 (1899) 295) of the gas phase reaction and its reverse, with rate constants and , respectively. The measured rate constants a..
Acid rain with a pH as low as 1.5 has been recorded in West Virginia. What is the H3O+ concentration in this acid rain and how many grams of HNO3 must be dissolved to make 25L of solution that has a pH of 1.5
what is the volume of the capillary tube and its associated error? What measurement must be made to a higher precision to decrease the error in the volume?
if 28.0 ml of .150 m hcl is needed to neutralize all the nh3 from a 2.25-g sample of organic material calculate the
write out the mechanism for alcoholysis of acetyl chloride with isopropyl alcohol. will steric factors slow this reaction down in a way
Rather than weigh the sample on a balance a chemist wants to dispense the liquid using a pipette. What volume (in mL) should she measure out?
You prepared a 0.250 M solution by diluting 8.45(+-0.04)mL of 28.0(+-0.5)mL wt.%NH3 (density=0.899(+-0.003)g/mL up to 500.0(+-0.2)mL. Find the uncertainty in 0.250 M.
acetylene (C2H2) torches are used in welding. How much heat in kJ evolves when 5.0g of C2H2 (d=1.0967kg/m^3) is mixed with a stoichiometric amount of oxygen gas?
The lab is synthesis of Methyl Red. The question is that diazonium salts cople with phenols in slightly alkaline solution. What effect does the PH of the solution have on reactivity of the phenol
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