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A compound contains the elements Ca and F. Analysis indicates that 2.94 g of sample of the compound contains 0.93 g calcium. Calculate the mass of fluorine in the sample.
Suppose that 1.419 g of impure barium hydroxide is dissolved in enough water to produce 213 mL of solution and that 40.4 mL of this solution is titrated to the stoichiometric point with 8.3 mL of 0.0696 M HCl(aq). What percentage of the impure sam..
A 75.0 L steel tank at 20.0C contains acetylene gas (C2H2) at a pressure of 1.39 atm. Assuming ideal gas behavior, how many grams of acetylene are in the tank?
How much heat is evolved when 1241 g of water condenses to a liquid at 100.°C?
Give a physical explanation of why the intrinsic viscosity and the specific viscosity divided by the concentration need
A student dissolves 7.39 g of and unknown protein in 0.286 l of water at 300k. She measures the osmotic pressure to be 3.932 x 10^-3 ATM.
Explain why the wavelength of light fluoresced by a molecule is longer than the exciting light (absorption) but light fluoresced by an atom is the same wavelength as the exciting light
volumetric flask and this solution becomes quite warm, but after it is permitted to return to room temperature, H 2 O is combined to total 500 mili litres of solution. Compute the pH of the final solution. ?
How many ml of 94 w/w% sulfuric acid (d=1.84 g/cm^3) is necessary for the preparation
Commercial grade hcl are typically 39% by mass HCL in water. determine mole fraction of HCL has solution has density
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)?
What actions should an exposed person take during the immediate aftermath of the explosion? D. Lastly, if radioactive material is involved in a disaster incident such as this and there is a fire ongoing in the area where the container is located, ..
A sample of gas at 47°C and 1.03 atm occupies a volume of 2.20 L.What volume would this gas occupy at 107°C and 0.789 atm?
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