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The rate constant for the decomposition of dinitrogen pentoxide to form nitrogen dioxide and oxygen gas has the rate constant 1.7 x 10-3 s-1. This is a first order reaction. If the initial concentration of dinitrogen pentoxide was 1.948 mol/L, how many seconds will it take for the concentration to reach 0.469 mol/L
The metal barium crystallizes in a body-centered cubic lattice. If the density of barium is 3.51g/cm3, what is the unit cell volume?
2. (a) Calculate the value of critical radius ratio for coordination number of 4 in an ionic compound (that is, convince yourself by calculation that the value given in the text is correct.) (b) repeat for a coordination number of 8.
Calculate the number of grams of Mg(OH)2 that should dissolve in 100 mL of water.
The temperature of the ideal gas in the container shown is 300 K. The gas occupies a volume of 1.27 m3. What would be the volume of the gas if its temperature were decreased to 100 K? No blocks are added to or removed from the lid.
What is the molarity of a solution that contains 41.0 g of vitamin B1 hydrochloride (molar mass = 337 g/mol}) in 280 mL of solution?
Calculate the partial pressure in atmospheres of O2 in the air outside an airplane cruising at an altitude of 10km where the atmospheric pressure is 190.0 mmHg.
Preparation of and alpha, beta-unsaturated ketone via Michael and Aldol Condensation: 6-ethoxycarbonyl-3,5-diphenyl-2-cyclohexanone.
Calculate the percent compostion of impure benzoic acid. The orignial weight of benzoic mixture was 4.23 g
The value of Ka for monochloroacetic acid is 1.35 multiplied by 10-3. Calculate the pH of a 0.24 M solution of monochloroacetic acid.
In the Olympics and other major athletic competitions, a GC-MS is used to screen athletes for their use of banned substances such as steroids.
A 4.369 g sample of metal is placed in a flask. Water is added to the flask and the total volume in the flask is read to be 126.4 ml. The mass of the water
During evaporation, molecules escape from the surface of a liquid and enter the gas phase. This physical change requires an energy input: a molecule cannot become gaseous unless it has sufficient energy to break free of its interactions with neigh..
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