Jaytu What best describes the sample at point D? temperature (°C) 140 120 100 80 60 C 40 B 20 0' -201 A -40 D heat absorbed pure liquid the first bubbles of steam start to form E

The fragment of H2O phase diagram is shown. What transition (e.g. liquid->solid, solid->gas... or none) would be observed when a sample of H2O initially at 0.003 atm and -5 C is heated at constant pressure to 0 C?

10-44 Determine the liquidus temperature, soli- dus temperature, and freezing range for the following NiO-MgO ceramic compositions: (a) NiO-30 mol% MgO; (b) NiO-45 mol% MgO; (c) NiO-60 mol% MgO; and (d) NiO-85 mol% MgO. [See Figure 10-8(b).] 2800 2600 2400 L+S 2200 (Ni, Mg)O 2000, 'NiO 20 40 60 80 MgO Mole percent Mg0 (b) Figure 10-8(b) The equilibrium phase diagram for the NiO-MgO system. (Repeated for Problems 10-44, 10-50, 10-53, 10-57, and 10-71.) Temperature (°C)

(a) Read the following burette and graduated cylinder and record your answer in the spaces provided below. -30 6 -20 7 -10 (i) Burette reading: (ii) Graduated cylinder reading: (iii) What is the name of the level of the liquid in the burette which we read? (iv) Water is a solvent. Therefore, it dissolves compounds and compounds. The H-O-H angle of water is (v) When ammonia is mixed with water, it and produces ions which make the solution basic. (vi) Water exists in three , namely solid, liquid and gas. As a solid, water is called and as a gas water is called (vii) The for H20(g) and H2O(t) are -241.85 kJ/mol and -285.85 kJ/mol, respectively. Therefore, the of water is +44.00 kJ/mol. 1 (b) An unknown mass of Na3PO4(s) is dissolved in water to form 50.00 mL of solution. This is Solution A. Then 10.00 mL of Solution A is diluted with water to 50.00 mL. The final solution is Solution B. 20.00 mL of Solution B contains 4.408 x 1020 sodium ions. (NA = 6.022 x 1023 mol-1) Calculate the mass…

What is the answer to this question?

The boiling points, surface tensions, and viscosities ofwater and several alcohols are as shown below: (a) From ethanol to propanol to n-butanol the boilingpoints, surface tensions, and viscosities all increase. Whatis the reason for this increase? (b) How do you explainthe fact that propanol and ethylene glycol have similarmolecular weights (60 versus 62 amu), yet the viscosity ofethylene glycol is more than 10 times larger than propanol?(c) How do you explain the fact that water has thehighest surface tension but the lowest viscosity?

The boiling points, surface tensions, and viscosities ofwater and several alcohols are as shown below:(a) From ethanol to propanol to n-butanol the boilingpoints, surface tensions, and viscosities all increase. Whatis the reason for this increase? (b) How do you explainthe fact that propanol and ethylene glycol have similarmolecular weights (60 versus 62 amu), yet the viscosity ofethylene glycol is more than 10 times larger than propanol?(c) How do you explain the fact that water has thehighest surface tension but the lowest viscosity?

The boiling points, surface tensions, and viscosities ofwater and several alcohols are as shown below:(a) From ethanol to propanol to n-butanol the boilingpoints, surface tensions, and viscosities all increase. Whatis the reason for this increase? (b) How do you explainthe fact that propanol and ethylene glycol have similarmolecular weights (60 versus 62 amu), yet the viscosity ofethylene glycol is more than 10 times larger than propanol?(c) How do you explain the fact that water has thehighest surface tension but the lowest viscosity?

Suppose the vapor pressure of a substance is measured at twodifferent temperatures. (a) By using the Clausius–Clapeyronequation (Equation 11.1) derive the following relationshipbetween the vapor pressures, P1 and P2, and the absolute temperaturesat which they were measured, T1 and T2:   (b) Gasoline is a mixture of hydrocarbons, a componentof which is octane (CH3CH2CH2CH2CH2CH2CH2CH3). Octane has a vapor pressure of 13.95 torr at 25 °C and a vaporpressure of 144.78 torr at 75 °C. Use these data and the equationin part (a) to calculate the heat of vaporization of octane.(c) By using the equation in part (a) and the data given in part(b), calculate the normal boiling point of octane. Compareyour answer to the one you obtained from Exercise 11.81.(d) Calculate the vapor pressure of octane at -30 °C.

Could you help me with #10? I included a picture of the phase diagram that was given. I attempted the question but I'm not sure if I got it right.