3. A. Using the phase diagram for carbon dioxide shown, determine the state of CO2 at the following temperatures and pressures: i. -25 °C and 3000 kPa ii. 20 °C and 101 kPa (normal room temp/atmospheric pressure) iii. -70 °C and 800 kPa B. Using the phase diagram for carbon dioxide shown, determine the approximate boiling point of CO2 at 1000 kPa?

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