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Two hypothetical ionic compounds are discovered with the chemical formulas XCl2 and YCl2, where X and Y represent symbols of the imaginary elements. Chemical analysis of the two compounds reveals that 0.25 mol XCl2 has a mass of 100.0 g and 0.50 mol YCl2has a mass of 125.0 g. • a. What are the molar masses of XCl2 and YCl2? • b. If you had 1.0-mol samples of XCl2 and YCl2, how would the number of chloride ions compare? • c. If you had 1.0-mol samples of XCl2 and YCl2, how would the masses of elements X and Y compare? • d. What is the mass of chloride ions present in 1.0 mol XCl2 and 1.0 mol YCl2? • e. What are the molar masses of elements X and Y? • f. How many moles of X ions and chloride ions would be present in a 200.0-g sample of XCl2? • g. How many grams of Y ions would be present in a 250.0-g sample of YCl2? • h. What would be the molar mass of the compound YBr3?

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