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Sagot :

Answer:

1) Starting boiling point is 100°C

Explanation: Boiling point is a constant temperature. At 10 minutes, substance L boils constantly at 100°C till 14 minutes.

2) The temperature of substance L steadily increases from 0 to 8 minutes. Then it is constant from 10 to 14 minutes.

3). Substance L is a pure substance. Substance L is pure water because pure water boils at 100°C

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e):

Substance L is Water

Reason: Substance L has boiling point of 100°C as well as water

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