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Consider two samples of liquid: one mole of water H2O and one mole of ethanol C2H5OH. The density of water is 1.0 g/mL, and the density of ethanol is 0.785 g/mL. Answer each of the following questions by selecting the correct choice.a)Which sample has a larger mass?b)Which sample contains more molecules?c)Which sample contains more atoms?d)Which sample contains more oxygen atoms?
A NMR spectrum shows a singlet at 7.3 ppm, a triplet at 4.3, a triplet at 2.9, and a singlet at 2.0. The relative areas are 5, 2, 2, and 3 respectively. What is the structure of the compound
What conceptual error did he make? Determine the correct empirical formula for this compound.
Explain why the H-H distances determined for coordinated dihydrogen by X-ray diffraction are always significantly shorter than
What final temperature, in degrees celcius, is needed to change the volume of the gas to each of the following, if n and P do not change?
Assume that the metal rack is cooled from 240°F to 85°F, the temperature of the outlet water. The amount of heat removed from the retort walls in cooling from 240 to 100°F is 10 000 btu. Radiation loss from the retort during cooling is estimated a..
A physiological saline solution is 0.92% sodium chloride (NaCl) by mass and has a density of 1.005 g/mL. What is the osmotic pressure of such a solution at body temperature of 37 degree C
Show your work in finding the partial pressure of the nitrogen gas, PN2. 2) Show your work in finding the mass of the nitrogen collected
The total pressure in a flask containing air and ethanol at 257C is 878 mm Hg. The pressure of the air in the flask at 257C is 762 mm Hg.
The rate constant for reaction A is doubled when the temperature is increased by 10 degrees. The rate constant for reaction B is tripled by 10 degree increase in temperature
What is the molarity of the resulting solution when 24.485 g of Mn(ClO4)2 · 6 H2O are added to 350.0 mL of water? I took 24.485g and divided it by 361.932 to get moles
The molar solubility of MnCO3 is 4.2 x 10-6 M. What is Ksp for this compound?
Consider the reaction CaCN2 + 3 H2 O → CaCO3 + 2 NH3 . How much CaCO3 is produced if 47.5 moles NH3 are produced?
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