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How many metric tons (t) of oxygen are combined in a sample of pitchblende that contains 2.5 t of uranium? Analysis shows that 84.2 g of pitchblende contains 71.4 g of uranium.
The second order reaction for the breakdown of nitric oxide to its elements has the rate constants of 0.0796 L/mol-s at 737 C and 0.0815 L/mol-s at 947 C. What is the activation energy of this reaction?
What is the equilibrium constant for reaction below at 25 degreesC? (R = 8.314 J/K*mol). MgCO3(s) -->? MgO(s) + CO2(g) given delta G of formation [MgCO3(s)] = -1028.2 kJ/mol, delta G formation [MgO(s)] = -568.8 kJ/mol, and delta G formation [CO2(g..
1.30 grams of ammonium nitrate is combined with 74.0 grams of h2o in a coffee-cup calorimeter nbspat an initial
An aerosol spray can of deodorant with a volume of 210mL contains 3.4g of propane gas as propellant. Part A What is the pressure in the can at 20 celsius
The Ksp of zinc oxalate (ZnC2O4) at a given temperature is 7.70 x 10-5 M. Calculate the molar solubility in 0.7657 M zinc nitrate at this temperature.
A rechargeable battery is constructed based on a concentration cell constructed of two half-cells. The volume of each half-cell is 2.1 and the concentrations of in the half-cells are 1.30 and 1.2×10?3.
A graduated cylinder is filled to the 40.00-mL mark with a mineral oil. The masses of the cylinder before and after the addition of the mineral oil are 124.966g and 159.446g, respectively. In a separate experiment, a metal ball bearing of mass 18...
a chemist studying the properties of photo-nbsp graphic emulsions needed to prepare 500 mlnbsp of 0.18 m agno3 aq. what
The rate of waste brine removal (Stream 6) 4.2. The rate of desalinized water (potable water) production (Stream 4) 4.3. The fraction of the brine leaving the osmosis cell that is recycled
The Henry's Law constant for CH3Br gas in water at 25 oC is 0.159 mol/L-atm. Calculate the solubility of CH3Br in water at 25 oC in moles/L if the partial pressure of CH3Br in the headspace above a water sample is 1.71 atm.
Centuries before any experiments had been carried out, philosophers had proposed the existence of the atom. Why are the proposals of these philosophers not considered theories?
Assuming complete dissociation and ideal behavior, what would be the boiling point of an aqueous solution of MgCl2 that is 8.0% MgCl2 by mass? For H2O
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