eRification of a Compound by Mass Relationships 1. A student attempts to identif

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eRification of a Compound by Mass Relationships 1. A student attempts to identify an unknown compound by the method used in this expeni- ment. She finds that when she heated a sample weighing 0.5015 g the mass went down appreciably, to 0.3432 g. When the product was converted to a chloride, the mass went up, to 0.3726 g. a. Is the sample a carbonate? Give your reasoning. b. What are the two compounds that might be in the unknown? and Write the chemical equation for the overall reaction that would occur when the origi- nal compound was converted to a chloride. If the compound is a hydrogen carbonate, use the sum of Equations 1 and 2. If the sample is a carbonate, use Equation 2. Write the equation for a sodium salt and then for a potassium salt. c. d. How many moles of the chloride salt would be produced from one mole of original compound? e. How many grams of the chloride salt would be produced from one molar mass of original compound? g Na,Co, g NaC1 g Molar masses: NaHCO, g original compound g chloride If a sodium salt, chloride g on f. What is the theoretical mass ratio, mass chloride/mass original compound? :1 If she has a K salt, If she has an Na salt, (continued)

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eRification of a Compound by Mass Relationships 1. A student attempts to identif

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