9) A solution is prepared by mixing 100.0 g of water, H20, and 100.0 g of ethanol, C2H5OH. Determine the mole fraction of water. A. 0.7188 B. 0.2832 C. 0.2812 D. 0.7190 10) What is the mole fraction of ethanol in no.9? A. 0.7188 B. 0.2832 C. 0.2812 D. 0.7190 11) Calculate the molality of 25.0 grams of KBr dissolved in 750.0 mL pure water. A. 0.271 m B. 0.280 m C. 0.290 m D. 0.285 m 12) Calculate the molality of a solution containing 16.5 g of dissolved naphthalene (C10H8) in 54.3 g benzene (C6H6). A. 0.247 m B. 0.227 m C. 0.228 m D0 237 m

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.