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What is the empirical formula of a hydrocarbon if complete combustion or 6.000 mg of the hydrocarbon produced 19.527 mg of CO2 and 5.995 mg of H2O? Be sure to write C first in the formula.
Calculate the theoretical yield of C2H5Cl when 106 g of C2H6 reacts with 236 g of Cl2 assuming that C2H6 and Cl2 react only to form C2H5Cl and HCl
A sample of sodium reacts completely with 0.142 of chlorine, forming 234 of sodium chloride. What mass of sodium reacted?
calculate the mole fraction of toluene in the solution that contains 126g toluene and 94g benzene
Write the formula of all the different carbon dioxide molecules that can be formed from these samples. Which molecule has the largest mass?
The U.S. Environmental Protection Agency set a maximum contaminant level (MCL) for tetrachloroethylene (TCE, C2Cl4) in drinking water of 0.005 ppm (by mass).
What volume (V) of 1.80 M NaOH solution must you add in order to prepare an acetate buffer of pH = 4.87? (The pKa of acetic acid is 4.76.)
a gas sample has a volume of .150 L at a temperature of 256 K. What volume will the gas occupy at 288K?
Use a systematic treatment of equilibrium to calculate the pH of a solution prepared by diluting 0.467 g of aniline (aminobenzene, C6H5NH2) to 100.0 mL.
Clausthalite is a mineral composed of lead selenide (PbSe). The mineral adopts a NaCl-type structure. The density of PbSe at 25C is 8.27g/cm^3. Calculate the length of an edge of the PbSe unit cell in Angstroms.
Write the cell notation for the voltaic cell that incorporates eachof the following redox reactions.
Calculate the volume of concentrated HCL (37% by weight, density 1.19 g/mL) that must be added to 500 mL of .10 M ammonia to make
What is the concentration of the HNO3 solution? (b) How many moles of NaOH were in excess after the first addition?
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