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The H NMR spectrum of a compound with formula C3H8O demonstrate signals at 1.2 (doublet) 2.2 (singlet) and 4.0 (septet, split seven ways). Define the structure and provide an acceptable name of the compound.
Consider a single photon with a wavelength of a frequency of and an energy of E. What is the wavelength, frequency, and energy of a pulse of light containing 100 of these photons
A gaseous mixture contains 450.0 Torr of H2(g), 358.7 Torr of N2(g), and 65.1 Torr of Ar(g). Calculate the mole fraction, X, of each of these gases.
A 9.767-g gaseous mixture contains ethane (C2H6) and propane (C3H8). Complete combustion to form carbon dioxide and water requires 1.120 mol of oxygen.
A 5.5 g sample of metal at 100.0 degrees celsius is placed in a calorimeter with 20.0 g of water at 15.0 degree celsius. If the temperature of the water rises to 21.0 degrees celsius, what is the specific heat of the metal?
How much .0100 M HCl is required to titrate 250 mL of .0190 M Na2CO3, and how much .0100 M HCl is required to titrate 250 mL of .0190 NaHCO3
The density of sodium borohydride is 1.492g*cm3. If 3.93 g of sodium borohydride contains 2.50*10^23 H atoms, Explain how many moles of H atoms are present in 28.0 cm3 of sodium borohydride
What is the new HPO4^2-/H2PO4- ratio and new pH of solution? The pKa of H2PO4- is 6.64. Use henderson-hasselbach. C) Now take a fresh 60mL of the 0.50M pH of 6.83 buffer and add 3.7mL of 1.00M NaOH. Caclulate the new pH of the solution.
A 50 mL sample of 0.5 M HCl is titrated with 0.5 M NaOH. What is the pH of the solution after 28 mL of NaOH have been added to the acid
An irregulary shaped metal object has a mss of 28.73 g. It is lowered int a 100-mL graduated cylinder that contains 35.2 cm3 water. The water level rises to 44.8 cm3. What is the density of the metal
What is the radius of the cross section of a cylinder that has a volume of 644.0 m3 and a height of 12.6 m? (Volume=πr2×height)?
The first end point volume phenolphthalein endpoint is 11.58 mL as well as the second end point volume (bromocresolgreen end point is 64.85mL. Compute the weight percentage of Na2CO3.
The ice was poured out into another container leaving a wet, empty beaker that weighed 46.146g. How much ice was poured into the other container?
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