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Hydrogen has two naturally occurring isotopes: normal hydrogen (H) with atomic mass of 1, and deuterium (D) with atomic mass of 2. A mixture containing equal number of moles of H2 and D2 is allowed to effuse down a capillary. What percent of the molecules effusing first would be D2?
Use the appropriate standard reduction potential to calculate the value of K at 25 C for the reaction. NiO2(s) + 2Cl-(aq) + 4H+(aq) --> Cl2(g) + Ni2+(aq) + 2H2O(l)
Determine the molar mass of chloroform gas if a sample weighing 0.389 g is collected in a flask with a volume of 102 cm3 at 97°C. The pressure of the chloroform is 728 mmHg.
Complete combustion of methane When methane () burns, it reacts withoxygen gas to produce carbon dioxide and water. The unbalancedequation for this reaction is This type of reaction is referred to as a complete combustionreaction. PART A What coef..
an automobile gasoline tank holds 22 kg of gasoline. when the gasoline burns 83 kg of oxygen is consumed and carbon
Given the parent compound, draw the mass spectrum fragment that is observed at m/z 91. Include any hydrogen atoms and the charge.
A 1-L flask is filled with 1.45 g of argon at 25^0C. A sample of ethane vapor is added to the same flask until the total pressure is 1.25 atm.what is the partial pressure of argon in the flask?
Liquid Chlorobenzene flows through a pipe at a rate of 3M^3/min. What is the mass flow rate of the stream in kg/h. What is the molar flow rate in mol/s
You have a box of volume 1.00 liter into which you inject 2.65g of NH3 at 600K. What will be the final concentrations of NH3, N2, and H2 after equilibrium is established
A tetraaquasalicylatoiron(III) complex calibration solution is prepared by transferring 0.50 mL of a 0.00900 M salicylate dianion stock solution into a 10.00 mL volumetric flask and diluting to the 10 mL mark with 0.02 M iron(III) chloride that ha..
25.0 mL of a gas with a pressure of 1.00 atm is contained in a balloon at 25.0 C. The balloon is then cooled to 5.0 C, and the pressure is found to be 0.750 atm. What is the volume of the gas under the new conditions?
if a sodium hydroxide solution were added to a solution containing leadii ions sodium ions nickelii ions and potassium
A sample of Tl-201 has an initial decay rate of 5.88 x 10 to the 4 seconds. How long will it take for the decay rate to fall to 55/s? (Tl-201 has a half-life of 3.042 days).
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