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A gaseous mixture of O2 and N2 contains 38.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 365mmHg
Construct a buffer to have a pH of 7.70 using HClO and NaClO (Ka = 3 x 10-8). How many grams of NaClO must be added to 1.0 L of a 0.40 M HClO solution (assume no volume change)
Calculate the ratio of HCL molecules in the first excited rotational state to those in the ground state @ 25 C. Assume an equilibrium bond distance of 1.275 angstroms.
A very long insulating cylindrical shell of radius 6.70cm carries charge of linear density 8.60Nc spread uniformly over its outer surface.
what is the balanced chemical reaction describing the decomposition of ammonium nitrate, and calculate the standard heat of reaction using the appropriate enthalpies of formation
1) Which of these electron configurations has the 4F term symbol for its ground state? p3 d3 d4 f2 f3
What is the entropy change for a particle in this system if the final number of microstates is 0.819 times that of the initial number of microstates?
On forming the nuclide from the protons, neutrons and electrons, the mass loss per nucleon for the is 0.00759 amu, whereas that for is 0.00944 amu. This means that:
What fraction of the original reactant concentration will remain after 2.0 hours?
How much PV work is done (in kilojoules), if 90.0 g of ethylene and 125 g of HCl are allowed to react at atmospheric pressure and the volume change is -71.9 L?
For 1-Chloropropane, draw 3 eclipsed, 2 gauche, and 1 anti conformations. Assume a chloro is the same size as a methyl group.
What is the freezing point (°C) of a solution prepared by dissolving 11.3 g ofCa(NO3)2 (formula weight= 164 g/mol) in 115 g of water? Assume that i=3.00 for Ca(NO3)2 and the molal freezing point depression constant for water is1.86°C/m.
Table salt (NaCl) and sugar (C12H22O11) are accidently mixed. A 5.00 g sample of the mixture is combusted, and 1.80 grams of CO2 are produced. What is the mass percent of sugar in the mixture
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