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The most common experimental technique to perform elemental analysis is combustion analysis, where a sample is burned in a large excess of oxygen and the combustion products are trapped in a variety of ways. A 99.99% pure,0.4949g sample containing only carbon, hydrogen, and nitrogen is subjected to combustion analysis, resulting in the formation of 1.386g CO2,0.2817g H2O, and0.1877g NO. What is the empirical formula of the sample?
Problem- Enough of a monoprotic acid is dissolved in water to produce a 0.0123 M solution. The pH of the resulting solution is 2.58. Calculate the Ka for the acid
the experiment is performed with hexane. a final weight for the gas of 0.31 grams is obtained. what is the value for n
If ammonia was added to a saturated solution of copper(II) iodate in a equilibrium with its precipitate, would the copper ion concentration increase, decrease, or stay the same. Why
If a sample containing 2.03 mL of nitroglycerine (density = 1.592 g/mL) is detonated, how many total moles of gas are produced?
Reduction of Conjugated Ketones with Sodium Borohydride, Suggest mechanisms of reaction for 1,2-addition and for conjugate addition (1,4-addition) of NaBH4 to a conjugated
A certain temperature and pressure 2.1 L of Cl2 reacts with 4.2 L of O2. If all the Cl2 and O2 are consumed, what volume of ClO2, at the same temperature and pressure, will be produced
Write the equation showing the S-trans to S-cis equilibrium of the two conformations for a. (E)-1,3-pentadiene b. (Z)-1,3-pentadiene and which equilibrium will favor the s-tans conformation more strongly
The root mean square velocity of argon atoms is found to be 5.67x103 m/s. What is the temperature of the gas
a 368-g sample of water absorbs infrared radiation at 1.06x104nm from a carbon dioxide laser. suppose all the absorbed
A solution was prepared by dissolving 0.450 g MgSO4 (FW=120.363g/mol) in 0.500L of water. A 50.0 mL aliquot of this solution consumed 37.60 mL of EDTA solution in a titration. How many milligrams of CaCO3 (FW=100.089g/mol) will react with 1.00 mL ..
A mixture of 0.156 moles of C is reacted with 0.117 moles of O2 in a sealed 10.0L vessel at 500.K, producing a mixture of CO and CO2. The total pressure is 0.640 atm. What is the partial pressure of CO
1. identify the element of lowest atomic number whose electron configuration contains four completely filled
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