Question

19. Below questions are based on the Table. Study this table related to melting
points and boiling points of different substances and answer the following
questions. (a) Name the substances from Table A that we can find in liquid state
at room temperature (25 °C) (b) We are heating a bowl of water and a bowl of
ethanol separately. We start from the same temperature and heat them on a
similar kind of flame. Which bowl will get empty first? (c) What does the melting
point of a solid indicate? (d) Glycerol is heated from 0 °C to 50 °C. When the
temperature reaches 17.8 °C, the temperature remains constant for a while and
only after some time, it starts to increase again. Why?
Boiling point (°C)
-57
-42
Component name
Carbon dioxide
Propane
Ethanol
Water
Glycerol
Melting point (°C)
-78
-188
-114
0
78.4
100
290
17.8​

Answer 1

Answer:

19. Below questions are based on the Table. Study this table related to melting

points and boiling points of different substances and answer the following

questions. (a) Name the substances from Table A that we can find in liquid state

at room temperature (25 °C) (b) We are heating a bowl of water and a bowl of

ethanol separately. We start from the same temperature and heat them on a

similar kind of flame. Which bowl will get empty first? (c) What does the melting

point of a solid indicate? (d) Glycerol is heated from 0 °C to 50 °C. When the

temperature reaches 17.8 °C, the temperature remains constant for a while and

only after some time, it starts to increase again. Why?

Boiling point (°C)

-57

-42

Component name

Carbon dioxide

Propane

Ethanol

Water

Glycerol

Melting point (°C)

-78

-188

-114

0

78.4

100

290

17.8

Answer 2

Answer:

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