Question

The table shows the mass and boiling point of some substances.


Boiling Point of Substances
Mass
(kg) Boiling Point of Water
(°C) Boiling Point of Soybean Oil
(°C)
1 100 N
2 M 300


Part 1: What is the difference between N and M?
Part 2: Explain your answer for Part 1.



Matt did an experiment to study the solubility of two substances. He poured 100 mL of water at 20 °C into each of two beakers labeled A and B. He 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 50 50 50 50
B 10 8 5 2


Part 1: Which, if any, substance is soluble in water?
Part 2: Explain how the data helped you determine solubility for both substances for temperatures 20 °C to 80 °C.

Answer 1

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Answer 2

Answer:

C) Boiling Point of Soybean Oil