For liquid oxygen (O2) at -210 ◦ C, draw a P vs. T phase diagram showing the raising of temperature of oxygen (O2) to -150 ◦ C. Your phase diagram does not need to be drawn to scale, but you must include the starting and ending temperatures and draw a line representing the transition, along with having an approximate phase diagram for liquid oxygen. (Don’t forget to include axis labels.)(assume pressure remains relatively constant)

aterán #3: How much heat (in kJ) is needed to change 55.0 g liquid water from 42.0°C to steam at 115°C? Step 1: Step 2: Step 3: Total:

- Suppose a small sample of pure X is held at -26.°C and 21.3 atm. What will be the state of the sample (solid, liquid, or gas)? - Suppose the temperature is held constant at -26.°C but the pressure is decreased by 15.7 atm. What will happen to the sample (nothing, it will melt, it will freeze, it will boil, it will condense, it will sublime, or it will deposit)? - Suppose, on the other hand, the pressure is held constant at 21.3 atm but the temperature is increased by 83.°C. What will happen to the sample(nothing, it will melt, it will freeze, it will boil, it will condense, it will sublime, or it will deposit)? - This is all part one question

Below is a phase diagram. Label the different parts of a phase diagram using the given word/s.

What amount of heat (in kJ) is required to convert 21.4 g of an unknown solid (MM = 67.44 g/mol) at -15.4 °C to a liquid at 42.7 °C? (specific heat capacity of solid = 1.95 J/g･°C; specific heat capacity of liquid = 1.18 J/g･°C; ∆Hfus = 5.72 kJ/mol; normal freezing point, Tf = 28.3°C)

Calculate the final temperature of a mixture of 130.0  g of ice initially at -15.50 °C and 337.0  g of water initially at 80.50 °C.

Please help, we haven't gone over this in class yet.

Point B is at 3 atmospheres and 80°C. 9. Answer the following questions based on the phase diagram shown below. E B. Temperature (a) What letter corresponds to the critical point? (b) What phase is the substance in @ 1 atm pressure and 23°C (the triangle)? - (c) What 2 phases both exist at point E? (d) What phase can this substance never be in at 1 atm pressure? (e) What happens to this substance if it starts at the point indicated by the rectangle and the pressure is increased to 10 atmospheres (at constant temperature)? (f) What happens to this substance if it starts at the point indicated by the triangle and the temperature is increased to the point indicated by the rectangle (at constant pressure)? ---- - --- --- ------ ---- ansse

Examine the phase diagram which contains important information about an unknown substance with the trade name of Mellow-W. Conditions of pressure (on the y-axis) are plotted against temperature (on the x-axis). From this examination, answer the questions below 10³ 10² Pressure (atm) 10 1 10-1 10-2 10-3 10-4 -200 Solid 0 about Mellow-W (Note! Only one answer is required, although more than one answer may apply). a) A temperature beyond which Mellow-W gas cannot be liquified: b) A temperature which describes Mellow-W's melting point at standard pressure: c) What is the temperature and pressure of the Critical Point? d) What is the temperature and pressure of the Triple Point?__: e) The name of the point where all three phases are in dynamic equilibrium: f) Which best describes the phase transitions that occur when Mellow-W at 10 atm is heated from -75° C to 330° C? (Circle one): i) solid->liquid ->gas ii) solid-gas iii) liquid->gas iv) solid -> liquid g) Which phase best describes…

The following compounds are liquid at -10 °C: diethyl ether, methanol, and ethylene glycol. Arrange the three compounds in order of increasing vapor pressure at -10 °C. Choose between 1 - lowest vapor pressure, 2, or 3 - highest vapor pressure. Note: Reference the Phase change properties of pure substances table for additional information. Diethyl ether Methanol Ethylene glycol (Choose one) (Choose one) (Choose one) X Ś