Laboratory Manval for General Organic, and Biochemistry,Seventh dnon 31 Name Loc

Question

Laboratory Manval for General Organic, and Biochemistry,Seventh dnon 31 Name Locker Number -Date PRELIMINARY EXERCISES: Experiment 2 Preparing Graphs 1. Consult the graph to the right: (a) Which has the larger mass, 10 ml, of carbon tetra40 chloride or 15 mL of water? 30 (b) What is the mass of 25 mL of carbon tetrachlo- 3 ride? 10 (c) Which line has the greater slope? (d) What unit would accom- 0 5 0 15 20 25 30 volume ImL pany the value of the slope of either line? 2 On the graph shown to the right: (a) Draw a star ()on the 120H (b) Draw a diamond () on o the ordinate. 70 (c) Draw a circle around the dependent variable. (d) Draw a small arrow point- ing to a tic mark. :46 20 25 60 (e) Circle the origin. number of patients

Explanation / Answer

Ans 1

Part a

Mass of 10 mL CCl4 = 16 g

Mass of 15 mL H2O = 15 g

10 mL CCL4 has the larger mass

Part b

Mass of 25 mL CCl4 = 39 g

Part C

Slope of CCl4 = (39-0)g/(25-0)mL = 1.56 g/mL

Slope of H2O = (20-0)/(20-0) = 1.00 g/mL

CCl4 has the greater slope

Part d

Unit of Slope = g/mL

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