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A compound contains only carbon, hydrogren nitrogren, and oxygen. Combustion of 0.212 g of the compound produced 0.287 g of CO2, and 0.0419 g H2O. In another experiment 0.300 g of the compound produced 0.0667 g of NH3.
What is the weight percent composition of the compound?
What is the empirical formula of the compound?
Hint: Combustion involves excess O2. Assume that all of the C ends up in CO2, and all of the H ends up in H2O. Also assume that all of the N ends up in NH3 in the second experiment.
Formic acid, HCOOH, the simplest carboxylic acid, is used in the textile and rubber industries and is secreted as a defense by many species of ants (family Formicidae). Calculate the percent dissociation of 0.38 M HCOOH.
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this solution was added 1.960 grams of KI and 50.00 mL of a 0.00923 M KIO3 solution. The excess I3- was titrated with 50.00 mL of a 0.02000 M Na2S2O3 solution. What was the mass percent of arsenic trichloride in the original sample?
A method for determining the quantity of dissolved oxygen in natural waters requires a series of redox reactions. Balance the following chemical equations in that series under the conditions indicated
the concentrations of the four main individual ionic compouns are 0.48 M NaCl, 0.090 M MgCl2, 0.0250 M CaCl2 and 0.0050 M KCl. what is the total mass of salt in one liter of seawater?
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