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Perform the following pressure conversion, assuming when necessary that atmospheric pressure is 1 atm. Unless otherwise stated, the given pressures are absolute.
70 psig to mm Hg (absolute)
This question accepts answer as the whole number only.
A .500g mixture of Copper I Oxide and Copper II Oxide contains .425g Cu by mass. What is the mass of CuO in this mixture
If the enthalpy of vaporization of CH2Cl2 is 29.0 kJ mole-1 at 25.0 oC and the entropy of vaporization is 92.5 J mole-1 K-1 , calculate a value for the normal boiling temperature of CH2Cl2
Use the free energies of formation given below to calculate the equilibrium constant (K) for the following reaction at 298 K. 2 HNO3(aq) + NO(g) ? 3 NO2(g) + H2O(l) K = ? Delta-G°f (kJ/mol) -110.9 87.6 51.3 -237.1
Draw and discuss the mechanism of the Diels-Alder reaction (with arrows to show the electron movements). Draw the orientation of the reacting p-orbitals and indicate how they overlap to form product.
Measurements of strontium in enamel from extracted wisdom teeth were done by atomic absorption spectroscopy. Solutions were prepared with a constant total volume
Explain what is the molarity of a Ba(OH)2 solution, 8.05mL of which neutralizes 10.00mL of 0.204M HNO3
A sample of ideal gas at room temperature occupies a volume of 34.0 L at a pressure of 722 torr. If the pressure changes to 3610 torr, with no change in the temperature or moles of gas, what is the new volume, V2
Problem- If X = the molar solubility of Ni(OH)2, which of the following represents the correct relationship between the Ksp and X, the molar solubility of Ni(OH)2
1.2 mole of a monoatomic ideal gas that occupies a volume of 13L at 248K spontaneously and isothermically expands until its voulme is doubled.
Is there a chemical composition that, when exposed to air, changes from a clear or white color to red over time
Carotene is a tetraterpenoid consisting of eight isoprene units bonded in head-to-tail as well as tail-to-tail fashion and cross-linked to form six-member rings at either end. Desire the bond formed by tail-to-tail linkage of the isoprene units.
A tap water sample is to be analyzed for nickel at the ppm level, which method would yield accurate results with the least amount of sample preparation?
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