Answer to Question #181288 in General Chemistry for Joshua

Question

1) How can this affect be achieved using CO2 or dry ice?

2) Why is solid carbon dioxide often called as dry ice?

3) In what phase is tge substance at 50°C and atm pressure?

4) At what pressure and temperature conditions will all three phases of the substances be present?

5) What is the normal melting point of the substance?

Answer 1

1.The sudden drop in temperature causes water vapor in the air to condense into tiny droplets, forming fog

2. Solid carbon dioxide gets this name because it does not melt into a liquid when heated; instead, it changes directly into a gas (a process known as sublimation).

3. Gaseous state

4. Pressure = 0.00603659 atm and Temperature = 0.01^oC

5. Melting point= −56.6 °C