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1. Given that ions X and Y combine as Na,Y and x(cloz)a complete the following table using the indicated ions and unknown X, Y and Z giving appropriate formulas: X Cs ions Ba ions Y Z XZ HCO3 2. A particular sausage weights 2,45 OZ and contains 0,0782% of sodium nitrite by mass. What mass of sodium (in grams) does the sodium nitrite contribute to the sodium content of the sausage? How many oxygen atoms (contributed by the sodium nitrite) are there in the sausage? 3. Ths compound, KBrO., is analyzed and found to contain 52,92% of Br. Using two different methods, identify the name of the compound.

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Mass Fraction and Writing Molecular Formulas with Ions
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