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10 Nov 2019
14. Explain why KBr dissolves in water but not in cooking oil. 15. A 20.00 mL sample of NaCl solution has a mass of 20.75 g. After the NaCL solution is evaporated to dryness the dry salt has a mass of 4.35 g . Calculate the following concentrations for the NaCl solution. MM NaCI= 58.5 (a) %m/m , (b) %M/v (c) M 16. What is molarity of acetic acid ,CH3COOH (MM=60.0) in vinegar if a 5.00 mL sample of vinegar requires 22.50 mL of a 0.195 M NaOH solution to neutralize it? 17. Explain three properties you can use to distinguish between organic and inorganic compounds. 18 Draw and name the isomers of hexane, C6H24.
14. Explain why KBr dissolves in water but not in cooking oil. 15. A 20.00 mL sample of NaCl solution has a mass of 20.75 g. After the NaCL solution is evaporated to dryness the dry salt has a mass of 4.35 g . Calculate the following concentrations for the NaCl solution. MM NaCI= 58.5 (a) %m/m , (b) %M/v (c) M 16. What is molarity of acetic acid ,CH3COOH (MM=60.0) in vinegar if a 5.00 mL sample of vinegar requires 22.50 mL of a 0.195 M NaOH solution to neutralize it? 17. Explain three properties you can use to distinguish between organic and inorganic compounds. 18 Draw and name the isomers of hexane, C6H24.