Question 11 Mark
State whether the following statement is true or false:
Solid carbon dioxide is stored under low pressure.
Solid carbon dioxide is stored under low pressure.
Answer
View full question & answer→False.
4 questions · self-marked practice — reveal the answer and mark yourself.
Explanation:
Pure water boils at 100 degrees Celsius under normal atmospheric pressure, but the Dead Sea surface is so low (more than 400 meters below "sea level") that water boils at about 101 degrees there. It does boil at a higher temperature because of the high amounts of non-volatile solids.
Explanation:
Food is cooked more quickly in a pressure cooker because at the higher pressure (1 bar/ 15 psi), the boiling point of water rises from 100°C (212°F) to 121°C (250°F).