Question

- B. Density of Liquid (sugar solutions) Table 1: Calculate the densities of three sugar solutions of known concentrations Sugar solution 3 Sugar solution Sugar solution 2 Concentration (mass/mass %) of 5 7. 15% 25% sugar solution Trial Trial 2 Trial Trial 2 Mass of empty 5.852 5.918 6.012 6.131 7.010 7.10) 0 Mass of cylinder + sugar solution (8) 7.910 8.015 8.514 8.786 9.815 9.939 C) Mass of sugar solution (8) 3) - (0) Volume of sugar 2.0 2.0 solution (m 2.0 2.0 2.0 2.0 ) Density of sugar solution (g/ml) Average density value (g/mL) MacBook Air

Answer 1

For Sugar Solution (1)

Trial 1

• Mass of solution (in g) = Mass of cylinder+sugar solution - Mass of empty graduated cylinder = 7.910-5.852 = 2.058g
• Density of solution (in g/mL) = Mass of solution (in g) / Volume of solution (in mL) = 2.058 / 2 = 1.029g/mL

Trial 2

• Mass of solution (in g) = Mass of cylinder+sugar solution - Mass of empty graduated cylinder = 8.015- 5.918 = 2.097g
• Density of solution (in g/mL) = Mass of solution (in g) / Volume of solution (in mL) = 2.097 / 2 = 1.0485g/mL

Average density = (Density from trial 1 + Density from trial 2) / 2 = (1.029+1.0485)/2 = 1.03875g/mL

For Sugar Solution (2)

Trial 1

• Mass of solution (in g) = Mass of cylinder+sugar solution - Mass of empty graduated cylinder = 8.514-6.012 = 2.502g
• Density of solution (in g/mL) = Mass of solution (in g) / Volume of solution (in mL) = 2.502 / 2 = 1.251g/mL

Trial 2

• Mass of solution (in g) = Mass of cylinder+sugar solution - Mass of empty graduated cylinder = 8.786-6.131 = 2.655g
• Density of solution (in g/mL) = Mass of solution (in g) / Volume of solution (in mL) = 2.655 / 2 = 1.3275g/mL

Average density = (Density from trial 1 + Density from trial 2) / 2 = (1.251+1.3275)/2 = 1.28925g/mL

For Sugar Solution (3)

Trial 1

• Mass of solution (in g) = Mass of cylinder+sugar solution - Mass of empty graduated cylinder = 9.815-7.010 = 2.805g
• Density of solution (in g/mL) = Mass of solution (in g) / Volume of solution (in mL) = 2.805 / 2 = 1.4025g/mL

Trial 2

• Mass of solution (in g) = Mass of cylinder+sugar solution - Mass of empty graduated cylinder = 9.939-7.101 = 2.838g
• Density of solution (in g/mL) = Mass of solution (in g) / Volume of solution (in mL) = 2.838 / 2 = 1.419g/mL

Average density = (Density from trial 1 + Density from trial 2) / 2 = (1.4025+1.419)/2 = 1.41075g/mL