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2121g sample of an organic compound was burned in a stream of oxygen adn the CO2 produced was collected in a solution of barium hydroxide. Calculate the percentage of carbon in the sample if .6006 g of BaCO3 was formed
Write the electronic configuration in sublevels for the following atoms
What is the final temperature when 125 g of iron at 92.3 °C is dropped into 50.0 g of water at 27.7 °C? The specific heat of iron is 0.444 J g-1 °C-1 and the specific heat of water is 4.184 J g-1 °C-1.
Consider the following observations taken on successive, cloudless autumn mornings. On the first day, a considerable amount of frost is on the grass at sunrise. On the second day, only dew appears on the grass. On which day is the temperature incr..
The very dense metal iridium has a face-centered cubic unit cell and a density of 22.56 g/cm3. Use this information to calculate the radius of an atom of the element.
A 49g piece of ice at 0 degrees C is added to a sample of water at 9 degrees C. All of the ice melts and the temperature of the water decreases to 0 degrees C.
"A mixture of CH4 and H2O is passed over a nickel catalyst at 100 degrees K. The emerging gas is collected in a 5.00-L flask is found to contain 8.62g of CO, 2.60 g of h2, 43.0 g of CH4, and 48.4 g of H2O.
What volume of a 3.00 M solution of phosphoric acid is needed to react completely with 75.0 mL of a 2.58 M solution of calcium hydroxide?
Change in heat content We write H = Hfinal - Hinitial or for chemical reactions H = Hproducts - Hreactants Given this equation, What sign is H for exothermic reactions? What sign is H for endothermic reactions?
What mass of sucrose should be combined with 474 g of water to make a solution with an osmotic pressure of 8.20 atm at 310K ?
Using decarboxylation reactions, outline a synthesis of each of the following from appropriate starting materials: (a) 2-Hexanone
equilibrium at 25C with 5.82L of an aqueous solution of N2O(aq). what is mass of N2O whic is disssolved?
Calculate the pressure exerted by 1 mole of CO2 confined in 22.45L at 298K using van der waals
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