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Mole fraction and mass percent: 1) An aqueous solution is36.0 % by masspotassium bromide,KBr, and has a density...

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Chemistry

Mole fraction and mass percent:

1) An aqueous solution is36.0 % bymasspotassium bromide,KBr, andhas a density of 1.33 g/mL.

The mole fraction ofpotassium bromide in thesolution is .

2) The mole fraction ofammoniumcarbonate,(NH4)2CO3,in an aqueous solution is6.61×10-2.

The percent by mass ofammonium carbonate in thesolution is  %.

Answer & Explanation Solved by verified expert
3.7 Ratings (356 Votes)
1 An aqueous solution is360 by masspotassium bromideKBr and has a density of 133 gmL The mole fraction ofpotassium bromide in the solution is Because it says 360 BY MASS it means that KBr is 360 of the total mass of the    See Answer
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