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4) 4) What molality of pentane is obtained by dissolving 35.0 g pentane, C5H12, in 230.0 g hexane, C6H14?

4) 4) What molality of pentane is obtained by dissolving 35.0 g pentane, C5H12, in 230.0 g hexane, C6H14?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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2.pdf-Adobe Acrobat Pro DC (32-bit) v Help 4 Soluti. x 1 / 3 100% 4) What molality of pentane is obtained by dissolving 35.0 g pentane, C5H12 in 230.0 g 4) hexane, C6H14? 5) Commercial grade HCl solutions are typically 39.0% (by mass) HCl in water. Determine the molarity of the HCI, if the solution has a density of 1.20 g/mL. 5) 6) What volume (L) of a 0.277 M KBr solution is needed to provide 13.4 g of KBr? 6) ch 99+ hp
Transcribed Image Text:2.pdf-Adobe Acrobat Pro DC (32-bit) v Help 4 Soluti. x 1 / 3 100% 4) What molality of pentane is obtained by dissolving 35.0 g pentane, C5H12 in 230.0 g 4) hexane, C6H14? 5) Commercial grade HCl solutions are typically 39.0% (by mass) HCl in water. Determine the molarity of the HCI, if the solution has a density of 1.20 g/mL. 5) 6) What volume (L) of a 0.277 M KBr solution is needed to provide 13.4 g of KBr? 6) ch 99+ hp
Expert Solution
Step 1

4.

Given, 

Mass of solute (C5H12) = 35 g 

Molar mass of C5H12  = 72.15 g/mol

Moles of C5H12 = 35/72.15 = 0.4851 mol

Mass of solvent (C6H14) = 230 g = 0.230 kg 

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