Solid carbon dioxide (dry ice) sublimes directly into carbon dioxide gas. Complete the sentences below using one of the following options:
- greater than
- less than
- the same as
- The distance between the particles in carbon dioxide gas is the distance between the particles in solid carbon dioxide.
- The density of carbon dioxide gas is the density of solid carbon dioxide.
The graph below shows how the temperature of the carbon dioxide varied with time as it was heated.
- What is the name of the process that is taking place between points E and F?
- Give a reason for your answer.
A mass of 0.15 kg0.15\text{ kg}0.15 kg of solid carbon dioxide was turned into carbon dioxide gas. The specific latent heat of sublimation of carbon dioxide is 570 000 J/kg570\,000\text{ J/kg}570000 J/kg.
Calculate the thermal energy transferred to the carbon dioxide to turn it into gas.
Use the equation: thermal energy for a change of state=mass×specific latent heat\text{thermal energy for a change of state} = \text{mass} \times \text{specific latent heat}thermal energy for a change of state=mass×specific latent heat
The mass of the carbon dioxide gas was 0.15 kg0.15\text{ kg}0.15 kg and its volume was 0.075 m30.075\text{ m}^30.075 m3.
Calculate the density of the carbon dioxide gas.
Use the equation: density=massvolume\text{density} = \frac{\text{mass}}{\text{volume}}density=volumemass
Choose the unit from the following options: kg\text{kg}kg, m3/kg\text{m}^3\text{/kg}m3/kg, or kg/m3\text{kg/m}^3kg/m3.