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A flask contains a mixture of hydrogen and oxygen. The pressure exerted by these gases is 785 mmHg. If the partial pressure of the hydrogen in the mixture is 395 mmHg, what is the partial pressure of the oxygen?
a toxicologist studying mustard gas sch2ch2cl2 a blistering agent prepares a mixture of 0.675 m scl2 and 0.973 m c2h4
Europium (Europium is a chemical element with the symbol Eu and atomic number 63 )crystallizes in a body-centered cubic lattice compute the unitcell edge length in pm if The density of Eu is 5.26 g/cm3..
The rate constant for a certain chemical reaction is 0.00250 M1 s1 at 25.0C and 0.0125 M1s1 at 50.0C. What is the activation energy for the reaction, expressed in kJ mol?
If 500 cc (cubic centimeters) of 2.0 M KOH are diluted with water to a volume of 1.000 cc, what is the molarity of the new solution
Correct each of the following names. (a) SnCl4 is tin(II) chloride. (b) NaClO4 is sodium chlorite. (c) Mn2O3 is manganese(IV) oxide.
Calculate the standard molar enthalpy of formation ?H°f of N2H4(g) from the following information: N2(g) + 2H2(g) ? N2H4(l) ?H°rxn = +50.6 kJ N2H4(g) ? N2H4(l) ?H°rxn = -44.8 kJ A. +5.8 kJ/mol B. +95.4 kJ/mol C. +47.7 kJ/mol D. -95.4 kJ/mol E. -5...
The compound Ca3(PO4)2 has a Ksp of 2.0 X 10-29. If the phosphate ion concentration is adjusted to a value of 2.5 X 10-2, what is the minimum Ca2+ concentration that will cause precipitation
Calculate the average value of the cosine of the angle between the electric field direction and the molecular dipole, , of a collection of molecules each with a dipole moment,µ=1.0 x 10-29 Coulomb meters
Assume no heat is lost to the surroundings. The normal boiling point of methane is -161.5 C. The specific heats of liquid and gaseous methane are 3.48 and 2.22 J/g.K, respectively. A)liquid B)gaseous C)solid
What is the time required to reduce the concentration of lactose in 2 L of milk from an initial value of 2.50 mg/mL to a final value of 1.5 mg/mL.
Calculate ?Srxn for the following reaction. The S for each species is shown below the reaction. 4NH3(g) + 5O2(g) -> 4NO(g) + 6H2O(g) 192.8 205.2 210.8 188.8 S(j\J/mol*K)
An open end manometer constructed from a U-shaped tube was operated using an oil which has a density of 1.088 g ml-1. In a particular measurement, the level in the end connected to the gas manifold, on which the experiment was being conducted, mea..
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