The samer weighed euch leaf at the start and hung them on the line He weighed them again after 24 hours. When water is l

[answerhappygod]

The Samer Weighed Euch Leaf At The Start And Hung Them On The Line He Weighed Them Again After 24 Hours When Water Is L 1 (44.59 KiB) Viewed 88 times

The samer weighed euch leaf at the start and hung them on the line He weighed them again after 24 hours. When water is lost from a leaf the mass of the leaf decreases. The table shows the percentage decrease in mass of the three leaves after 24 hours Surface covered with vaseline Load Massig after 24 at start hours Parcentage docroSD in mass 1.3 32 1 Neither 1.9 1.6 11 2 Lower 1.8 3 Upper 2.0 1.6 2.1 Use the equation to calculate the percentage decrease in mass of leaf 3. Show all your working. (3) 2.2 The percentage decrease in mass is used to compare the results. Explain why. (2) 2.3 The leamer did not put vaseline on either surface of leaf 1. What was the purpose of of leaf 1? 2.4 The learner covered the lower surface of leaf 2 with vaseline. Suggest why leaf 2 had the smallest percentage decreae in mass. (2) (8)