Tutorial 1

# Tutorial 1 - A and 58.63 B by volume, what is the density...

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CBC 111 Tutorial Questions 1 Question 1: Chlorine (Cl 2 ) is used to disinfect swimming pools. The accepted concentration of Cl 2 for this purpose is 1 ppm, or 1 g of Cl2 per million grams of water. Calculate the volume of a chlorine solution (in mL) a homeowner should add to her swimming pool if the solution contains 6% chlorine by mass and there are 2.0 x 10 4 gallons of water in the pool. (1 gallon = 3.79 L; density of the liquids = 1.0 g/mL) Question 2: Liquids A and B were mixed to give a homogeneous solution. The densities of the liquids are 2.0514g/mL and 2.6678 g/mL, respectively. When a small metal object was dropped to this solution, it was found that the object became suspended in the solution; that is, it neither sank nor floated. If the mixture was made up of 41.37%
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Unformatted text preview: A and 58.63 B by volume, what is the density of the metal? What assumptions must be made in applying this method? Question 3: An empty flask weighs 38.2567 g. When it is filled with water, it weighs 55.1437 g. When it was filled with an unknown liquid, it weighs 58.1735 g. Calculate the density of this liquid (Density of water = 0.9980 g/mL). Question 4: Calculate the following and pay attention to the significant figures. (28.21 1.0) x 0.157/0.124 Question 5: Carry out the following conversions: (1) kg/L to g/mL, (2) kg/m 3 to g/cm 3 , and (3) eV to kJ/mol. Question 6: Prove that the intensity ratio of the m/e 78 peak to the 79 peak is 98.9:6.6 in the mass spectrum of benzene....
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## This note was uploaded on 09/25/2008 for the course - - taught by Professor - during the Spring '08 term at Nanyang Technological University.

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