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A 1790 g sample of a solution of the solute methanol in the solvent ethanol that has a concentration of 4.50 % by mass CH3OH is available. Calculate the amount (g) of methanol that is present in the sample.
Molar Mass (g/mol)CH3OH 32.04C2H5OH 46.07Density (g/mL)CH3OH 0.7914C2H5OH 0.7893Name/Formulamethanol / CH3OHethanol / C2H5OH
A mixture of carbon and sulfur has a mass of 9.0g . Complete combustion with excess O2 gives 23.0g of a mixture of CO2and SO2. Find the mass of sulfur in the original mixture.
Ten grams of hamburger were added to 90 mL of sterile buffer. This was mixed well in a blender. One-tenth of a mL of this slurry was added to 9.9 mL of sterile buffer.
When the following deuterium-labled isomer undergoes elimination, the reaction yields only trans-2-butene and cis-2-butene-2-d.
How do you arrange PV=nRT to give equation relating pressure to concentration and use it to modify Beer's Law to apply to gas pressure? Write a formula that relates absorbance to gas pressure.
which is to say that potassium iodide is added to the sodium chloride as a nutrient. When a 4.2962 g sample of table salt was analyzed by precipitating the halides with silver nitrate, 10.4192 g of a miture of AgCl and AgI resulted.
An unknown had the chemical formula C4H10O. It showed a positive chromic acid test, a positive lucas test in 5 minutes, and a positive iodoform test. What is the structure of the unknown compound
Write the rate law for this version of the iodine clock reaction. Could the rate law have been predicted using the coefficients in the balanced equation? Explain
A vessel of volume 22.4 dm^3 contains 2.0 mol H2 and 1.0 mol N2 at 273.15K initially. All the H2 reacted with sufficient N2 to form NH3. Calculate the partial pressures and the total pressure of the final mixture.
A solution of calcium ions contains 5 meq/650. cm3 of calcium ion. How many moles of calcium ion does this solution contain?
A water heater contains 55 gallons of water. How many Kwh of energy necessary to heat the water heater by 25 degree celcius
1. what mass of water vapor is produced when 0.750 moles of oxygen gas reacts with propane?2. how many molecules of
The gas phase reaction A + B ® C has a reaction rate which is experimentally observed to follow the relationship rate = k[A]2[B]. Which one of the following would affect the value of the specific rate constant
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