The mole fraction of He in a gaseous solution prepared from 4.0 g of He, 6.5 g of Ar, and 10.0 g of Ne is ____. What is the molarity of sodium…

96. The mole fraction of He in a gaseous solution prepared from 4.0 g of He, 6.5 g of Ar, and 10.0 g of Ne is ____.97. What is the molarity of sodium chloride in solution that is 13.0% by mass NaCl and that has a density of 1.10 g/mL?

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