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The rate of effusion of a particular gas was measured as well as found to be 24.0mL/min. Under the same conditions, the rate of effusion of pure methane (CH4) gas is 47.8 ML/min. Explain what is the molar mass of the unknown gas?
nitrogen gas is usually available in 60 l steel tanks at a pressure of about 2200 psi. if the gas is at room
acetylene gas c2h2 is produced by adding water to calcium carbide cac2.cac2s 2 h2ol rarr c2h2g 2 caoh2aqdetermine how
Plaster of Paris, CsSO4 x XH2O, is a fractional hydrate; that is, one water molecule attaches to more than one formula unit. If a 2.002-g sample has a mass of 1.878 g after hearing, find the water of crystallizatioin (X), and write the formula for..
When a charge transfer electrode reaction occurs at a very slow rate, the concnetration on the surface of the electrode is ____ than the bulk concentration.
If you wish to obtain 10.0 grams of copper metal from copper(ii) sulfide, what mass of copper(ii) sulfide must you use
Basic copper carbonate contains 57.48% copper and 5.43% carbon by mass. What mass of copper in g is contained in 7.061 kg of basic copper carbonate
A small cylinder of helium gas utilized for filling balloons has a volume of 2.30 L and a pressure of 1850 atm at 25°C. Explain how many balloons can you fill if each one has a volume of 1.3 L and a pressure of 1.25 atm at 25°C
If the pKa for acetic acid, found in commercial white vinegar is 4.754 at 298 K, then calculate the pH, percent ionization, and pOH of a 0.585 M acetic acid or 5% vinegar solution.
A lab student analyzed a nickel-en complex for ethylenediamine, en, content. A 0.353g sample of the synthesized Ni-en complex was dissolved in about 50 mL of water and titrated with 0.165 M HCl (aq). Endpoint required 36.40 mL of the HCl (aq)
Explain the original sample had a mass of 3.187 g. The dried precipitate has a mass of 2.005 g. Explain what is the percent of sulfur in the original ore
Consider a particle that is confined by a one-dimensional quadratic (harmonic) potential of the form U9x)=Ax^2 (where A is a positive real number). A. What is the Hamiltonian of the particle(expressed as a function of velocity v and x)?
What is the potential (volts) of the cell at 25oC when the appropriate beakers are constructed to have MnO2 = 0.0127 mols, [H+] = 0.0130 M, [Mn2+] = 0.167 M, [IO3-] = 0.146 M, and I2 = 0.0154 mols [Note: The standard reduction potentials of the tw..
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