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A carbon-hydrogen-oxygen containing compound yields 1.029 g CO2 and 0.198 g H2O in a combustion analysis( note that this means O2 was added the overall reaction) what is the empirical formula? if the Molar mass is 138.16 what is the molecular formula?
Butane (C4H10) reacts with oxygen in the air to from carbon dioxide and water. how many moles of carbon dioxide can be formed from 1.25 mol of butane and excess oxygen?
How fast must a 50.2-g tennis ball travel to have a de Broglie wavelength equal to that of a photon of green light (5400 Å).
The density of helium gas at 273K and 1.00 atm is 1.76E-4 g/mL. What is the volume (in L) of a balloon containing 9.24 g of helium under the same conditions?
If 30.00 mL of 0.500 M KOH are needed to neutralize 10.00 mL of HCl of unkown concentration, what is the molarity of the HCl
A 55.0-L steel tank at 20.0°C contains acetylene gas, C2H2, at a pressure of 1.39 atm. Assuming ideal behavior, how many grams of acetylene are in the tank?
Name the highly volatile liquid may cause grave danger to The Environmental Health & Safety and Fire Safety professionals at happening scenes as its vapor
If you dilute 28.0 of the stock solution to a final volume of 0.540 , what will be the concentration of the diluted solution?
liquid mercury at atmospheric pressure and 298K to 1.25L at constant temperature requires 46.6kbar (kilobars) of external pressure. What is the isothermal compressibility of Hg(l)?
a 125 g sample of an unknown metal requires 1351 j of energy to heat it from 25 degrees celcius to 112 degrees celcius. what is the specific heat capacity of the unknown metal.
Draw the structure of the product that is formed when methylbenzene is treated with the following reagents:1) NBS, heat; 2) Mg; 3) Ethylene oxide
When 76.0 grams of calcium and 36.9 grams of nitrogen gas undergo a reaction that has a 90.0% yield what mass of calcium nitride is formed?
69.7 grams of a solute with a molecular mass of 2790 grams are dissolved in enough water to make 1.00 dm(3) of solution at 20 degrees C. What is the osmotic pressure of the solution? express your answer in kPa
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