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How much heat is required to raise one mole of He gas by 10 K if (a) the gas is confined to a sealed container and (b) the gas is confined by a piston, the external pressure being 10 atm. Also, calculate the work done by the gas in each case. For He, Cp= 20.79 J/K/mol and Cv= 12.38 J/K/mol, which may be taken as independent of temperature.
Prepare the molecular formula for given compounds and determine the amount of molecules present and write the molecular formula and determine how many grams of each you have
Exothermic Reaction. Chemical process in which system evolves resulting in heat transfer to the surroundings. Endothermic Reaction: Chemical process in which system evolves resulting in heat transfer to the system. A. Burning wood in a campfire.
If we add a solid aluminum cylinder to a graduated cylinder containing 19.2 mL of water, and the water level in the cylinder rises to 24.7 mL, what is the mass of the aluminum cylinder?
Calculate the heat required to convert 24.0 g of C2Cl3F3 from a liquid at 12.00°C to a gas at 56.00°C
If toluene(density 0.87) were used to extract ethylene bromohydrin (density 2.41) from an aqueous solution.
Dinitrogen pentoxide, N2O5, decomposes in the gas phase to form nitrogen dioxide, NO2, and oxygen gas, O2. The reaction is first order in dinitrogen pentoxide and has a half-life of 2.81 hours at 25 C.
formation of a compound cannot be truly explained. What is your view on this topic? Are there any other factors that should be considered?
An isotonic solution is described as 0.92% NaCl (g/mL). Would this also be the required concentration for isotonic solutions of other salts, such as KCl, MgCl2,
Uric acid dissociates as shown in the figure at the right with a pKa of 5.80, and can be treated as a simple monoprotic acid in this pH range.
What mass of ethanol, C2H5OH a nonelectrolyte, must be added to 10.0 L of water to give a solution that freezes at -10.0C? Assume the density of water is 1.0 g/mL. Kf of water is 1.86C/m.
What is the pressure in millimeters of mercury of 0.0100 mol of helium gas with a volume of 211 mL at a temperature of 50^circ C?
what volume will a 300.0 mL sample of gas at STP occupy when the pressure is doubled at constant temperature
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