What information about water is needed to calculate theenthalpy change for converting 1 mol H2O1g2 at 100 °C toH2O1l2 at 80 °C?(a) heat of fusion (b) heat of vaporization (c) heat of vaporizationand specific heat of H2O1g2 (d) heat of vaporizationand specific heat of H2O1l2 (e) heat of fusion and specificheat of H2O1l2

In each of the following groups of substances, pick the one that has the given property. Justify your answer. (a) highest boiling point Ne C12₂ HI Since this compound has ---Select--- (b) highest freezing point NH3 H₂O KCI Since this compound has ---Select--- unlike the other two compounds, it has the ---Select--- unlike the other two compounds, it has the ---Select--- (c) lowest vapor pressure at 25°C C12 12 F₂ Since all the molecules are ---Select--- and this molecule is ---Select--- than the other two, it has the intermolecular forces and will have the highest boiling point. intermolecular forces and will have the highest freezing point. ---Select--- ↑ ---Select--- (d) lowest freezing point H₂Se H₂ Cse2 Since this molecule is ---Select--- and ---Select--- than the other two, it has the ---Select--- ♥ ---Select--- and will have the lowest vapor pressure. and will have the lowest freezing point.

Determain the boiling point of water at 672 mm Hg.

Which molecule ( CH3OH or CH4 ) has a greater vapor pressure and why?

Q1.)Using the data provided in Table 3 in the handout (also provided below), calculate the vapor pressure of water at 21.0 °C.?? Table 3:  Vapor pressure of water at various temperatures T (˚C) P (mmHg) T (˚C) P (mmHg) T (˚C) P (mmHg) 0 4.58 16 13.63 26 25.21 5 6.54 18 15.48 28 28.35 10 9.21 20 17.54 30 31.82 12 10.52 22 19.83 40 55.3 14 11.99 24 22.38 50 92.5 PART B)  In the experiment, you wrap a piece of copper wire around your magnesium strip to suspend the magnesium inside the eudiometer. Why is copper wire a good choice for this task? MULTIPLE CHOICE :  A.It conducts electricity very well B. It reacts strongly with the acid C. It does not react with the acid D. It is much heavier than Mg

Practile Problers Table H Vapor Pressure of Four Liquids 200. propanone ethanol 150. water ethanoic acíd 101.3 kPa 100. 50. 50. 75 100. 125 Whet Temperature (°C) Vapor Pressure (kPa) 25

what mass of ice at 0 Celcius is needed to cool 150 g of water at 25 C to 0 C?

Pentane C5H12 boils at 360C at 1 atmosphere pressure. What is the molar heat of vaporization in kJ/mol if the vapor pressure of pentane at 250C is 505 torr?