Sasha did an experiment to study the solubility of two substances. she poured 100 ml of water at 20 °c into each of two beakers labeled a and b. she put 50 g of substance a in the beaker labeled a and 50 g of substance b in the beaker labeled b. the solution in both beakers was stirred for 1 minute. the amount of substance left undissolved in the beakers was weighed. the experiment was repeated for different temperatures of water and the observations were recorded as shown.
experimental observations
substance mass of undissolved substance at different temperatures (gram)
20 °c 40 °c 60 °c 80 °c
a 12 11 9 8
b 45 40 34 31
part 1: which substance has a higher solubility?
part 2: explain your answer for part 1.
Answers: 1
Chemistry, 21.06.2019 17:30
Write a paragraph at least 10 sentences explaining how rocks are used today in society
Answers: 1
Chemistry, 21.06.2019 17:50
Which best describes why nh4+ can form an ionic bond with cl-?
Answers: 3
Chemistry, 22.06.2019 22:00
4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.
Answers: 2
Chemistry, 23.06.2019 02:20
Which of the following will cause an increase in the acceleration of an object? increase force decrease force increase mass decrease mass
Answers: 1
Sasha did an experiment to study the solubility of two substances. she poured 100 ml of water at 20...
World Languages, 02.08.2019 20:00
Mathematics, 02.08.2019 20:00
Mathematics, 02.08.2019 20:00
History, 02.08.2019 20:00
Advanced Placement (AP), 02.08.2019 20:00
Mathematics, 02.08.2019 20:00
Physics, 02.08.2019 20:00
Mathematics, 02.08.2019 20:00