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A standard Na solution with a concentration of 1.75 ?g/mL Na is added to an unknown concentration of Na. Based on the data below, determine the original concentration of Na as well as its uncertainty in a pure unknown sample.
Unknown (mL) Standard (mL) Final Volume (mL) Emission Intensity
5 0 200 3115 5 200 4545 10 200 6025 15 200 7675 20 200 908
Calculate the final temperature of the metal and water mixture, assuming no heat loss to the surroundings.
Gallium has two common isotopes Ga-69 and Ga-71. Suppose we wanted to use the Ga-71 isotope for some reason, and obtained a pure 6.0g sample of Ga-71.
Important information about Calculation, A person ate 0.50 pound of cheese (an energy intake of 4000kJ). Suppose that none of the energy was stored in the body
Calculate the fraction of methyl isonitrile molecuules that haven an energy of 80.30 kJ or greater at at 450 k.
Calculate the value of Delta S in heating 3.5 moles of a monatomic ideal gas
Provide a method for seperating the mixtures of the compounds, dissolved in a solvent diethyl ether. In each case one of the components will be neutral compound. Give your answer in the form of flow chart.
degrees Celsius) is placed in 20.6 g of water at 25.00 degrees Celsius. What is tins specific heat if the equilibrium temperature is 47.75 degrees Celsius?
The partial molar volumes of water and ethanol in a solution with x(H2O) = 0.40 at 25 degrees C are 16.9 and 57.5 cm^3/mol, respectively.
Calculate the density of a sphere that has a circumference of 2.00 inches and weighs 100.0 gms. (c = 2pi r) (V = 4/3pi r^3)
A liquid has a H vaporization of 35.5kJ/mol and a boiling point 0f 122 degrees celcius at 1.00 atm.What is its vapour pressure at 109 degrees celcius.
Important information about Organic Chemistry, The most reasonable formula for a compound demonstrating M+ =101 with a minor M+1 peak is
Isomeric products isolated from free-radical chlorination, Some isomeric products were isolated from the free-radical chlorination of (R)-sec-butyl chloride.
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