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Liquid nitrogen trichloride is heated in a 2.23-L closed reaction vessel until it decomposed completely to gaseous elements. The resulting mixture exerts a pressure of 731 mmHg at 83°C. (a) What is the partial pressure of each gas in the container (in mmHg)? (b) What is the mass of the original sample (in g)?
Its atomic number was believed to be 126. What is the most probable distance of the innermost electrons from the nucleus of an atom of this element?
Osmostic pressure causes ground water to rise in a tree trunk. What is the colligative concentration required to drive water to the top of a 100 ft tree
A radioactive 32P nucleus has a half-life of 14.3 days. If a 50.00 g sample is allowed to decay naturally, how much time passes until only 1.00 g of 32P remains
Calculate the standard Gibbs free energy and the equilibrium constant at 298 K and at 400. K for the reaction PbO(s) + CO(g) ? Pb(s) + CO2(g).
What effect does the presence of lone-pair electrons have on the bond angles and the geometry of a molecule?
What volume of a 0.215 M sodium hydroxide solution is needed to exactly neutralize 1.06 grams of KHP
What are amino-acid tRNA synthetase enzymes and why are they important in the biology of cells? How many different ones do you know exist in any given cell type
Use the mean value that you determined for Keq to calculate the SCN- concentration in a solution Fe3+ concentration was 4.00 X10-2M and initial SCN- concentration was 1.00 X10-3 M. Is all of theSCN- in the form ofFeNCS2+?
A tank containing carbon dioxide at 400K and 50 bar is vented until the temperature in the tank falls to 300K. Assuming there is no heat transfer between the gas and the tank
A water chemist obtained a 250-mL sample from a nearby lake and fixed the oxygen on-site wth alkaline solutions of MnS04 and Kl-NaN3-. returning to the labrotary, a 200-mL sample was analyzed by acidifying the sample
If the E(cell) measured of Cu vs. Zn is .652 and the E(cell) meausered of Zn vs. Sn is .302. what is the E(cell) of Cu vs. Zn
the equilibrium mixture is compressed at constant temperature to a volume of 6.21 L? [NH3] = [H2S]=
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