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which of the following is always negative when a spontaneous process occurs? delta S system, delta S surroundings, delta S universe, delta G system, or none of the above?
1.If 2.47 g of salicylic acid is reacted with 61 mL methanol, what is the maximum mass of product (oil of wintergreen) that could be formed?
given the following bond enthalpy values calculate the enthalpy of formation for gas phase isopropanol c3h7oh at 25
Using heat of fusion, specific heat of water, and/or heat of vaporization, calculate the amount of heat energy in each of the following. calories to condense 135 g of steam at 100^{circ}{rm C} and to cool the liquid to 15^{circ}{rm C} (two steps)
Use the distance between the charges (the spring length) BEFORE contraction to get the spring force (using coulomb's law) and divide that by the distance that it contracted to get the spring constant OR
Calculate (a) the volume occupied by 8.2 mmol of the gas under these conditions and (b)an approximate value of the second virial coefficient B at 300 K.
Rate constants for the decomposition of acetaldehyde were measured at five different temperatures. A plot of ln k versus 1/t gave a slope of -2.09*10^4 K. What is the activation Energy for this reaction
before addition of any HCl (b) after addition of 25.0 mL of HCl (c) after addition of 50.0 mL of HCl (d) after addition of 100.0 mL of HCl
How many milliliters of 0.0759 M NaOH are required to titrate 25.0 mL of 0.0896 M HBr to the equivalence point?
a compound contains only carbon hydrogen and oxygen. combustion of 0.01068 g of the compound yields 0.01601 g of co2
What is a significant obstacle when using osmometry to determine molar masses for compounds with very high molar masses? A. The osmotic pressures may be too high to measure.
Briefly sketch the major components of the FTIR, showing the pathway of the IR radiation among the components.
A baby with a severe bronchial infection is in respiratory distress. The anethetist administers heliox a mixture of helium and oxygen with 92.3 % by mass O2. What is the partial pressure of oxygen being administered to a baby if atnospheric pressu..
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