Calculating Weight Change

Copy "Data Set for Part 2" here Calculating Weight Change and % Weight Change To calculate % difference, subtract the % sucrose concentration in the beaker from th sucrose concentration in the sac. Data Set 2 Weight change = weight(t=?) – initial weight(t=0) Initial Data Collection WEIGHT % Weight change = 100 x (current weight – initial weight) / initial weight) Sac = 25% sucrose Beaker (200 ml) Beaker = 45% sucrose 0% sucrose 30% sucrose 50% sucrose Example: contents Sac (10 ml) % difference = 25% – 45% Contents 0% sucrose 20% sucrose 60% sucrose initial weight = 10.0 g; current weight = 12.5 g Time (min) Combination 1 Combination2 Combination 3 weight change = 12.5 g – 10.0 g = 2.5 g Answer: – 20% 0 11.69 12.34 14.13 % weight change = 100 x (2.5 g/10.0 g) = 25% Place -20 as the value in the table under % difference 5 11.82 12.28 14.24 Record the value as -20 in your table withou the % sign. If you include the %, Excel will 10 11.59 11.94 14.16 Note: % weight change can be positive or negative in value. change your value to 0.2, which is incorrect. 15 11.53 12.02 14.39 20 11.63 11.79 14.45 Place % weight change values in the table below. Note: Place Knisely formatted graph of "%weight change" versus "time" in this box along with your figure caption. Use values only, do not use % sign % Weight Change % Difference (Sac-Beaker) Time (min) S: 0%, B: 0% S: 20%, B: 30% S: 60%, B: 50% 0 5 10 15 20