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Three flasks are connected by tubing. The first flask contains He at 1.00L and 180torr. To the right of this flask is another flask containing Ne at 1.00 L and .450atm The last flask on the right holds Ar at 2.00 L and 25.0 kPa. Explain what is partial pressure of each gas and the total pressure when all of the connections are opened
When ethyl benzoate is heated in methanol containing a small amount of HCl, methyl benzoate is formed. Draw structural formulas for the first two intermediates in this reaction.
A gaseous mixture containing 0.200 mol fraction of carbon tetrachloride (CCl4) and 0.800 mol fraction of dry air is initially at 68.0°C and 1169 mmHg. 1- If this mixture is cooled at a constant pressure, at what temperature does the CCl4 first sta..
What mass of sucrose should be combined with 479 of water to make a solution with an osmotic pressure of 8.00 at 315 ? (Assume the density of the solution to be equal to the density of the solvent.)
A cell composed of a platinum indicator electrode and a silver-silver chloride reference electrode in a solution containing both Fe2 and Fe3 has a cell voltage of 0.738 V. If the silver-silver chloride electrode is replaced with a saturated calome..
Estimate the pH range over which the color change occurs for bromocresol green. What would be the effect on your results if methyl red indicator, pKa =5.0 were used during the experiment
In what part of the periodic table are the smallest ionization energies for the first electron found. a. Upper left
How many grams of ice at -9.4 can be completely converted to liquid at 6.2 if the available heat for this process is 5.96×103? For ice, use a specific heat of 2.01 and = 6.01.
If the sun is a distance of 1.5 x 10^8 km from earth, how many minutes does it take sunlight to reach earth if light travels at 186,000 miles each second
osmium os is the densest element known density 22.57 gcm3. calculate the mass in pounds and in kilograms of an os
What % of the bromide ions remain in solution, i.e., unprecipitated, just before silver chloride begins to precipitate? Ksp for AgCl=1.8x10^-10, Ksp for AgBr=3.3x10^-13
The oxidation of nitrogen monoxide gas by molecular oxygen to form nitrogen dioxide gas is reversible and exothermic. Predict the effect of each of the following changes on the position of the equilibrium and a relative change in Kc.
The reaction of boron with carbon monoxide produces compounds with these skeletal structures: B--B--C--O and O--C--B--B--C--O. For each of these compounds, draw the lewis structure that minimizes formal charges.For each compound select the atoms t..
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