Assume that the temperature of the breath of a human being is 35 ° C and its relative humidity is 95% after leaving the mouth, will the exhale become visible at 10 ° C air temperature, in other words will there be be condensation? prove your statement with calculations. The vapor pressure of water at 35 ° C is 5.62 kPa (100% relative humidity) and its enthalpy of vaporization is 44 kJ/mol.

Q: Why do do volatile substances,like alcohol and acetone, produce a cooling effect on a surface from…

A: In the process of evaporation, the liquid changes into the gaseous (vapor) state. The physical state…

Q: Using the graph of ln P vs 1/T (in Kelvin) for water vapor pressure, what is the vapor pressure of…

A: Conversion of 15.0℃ to K: 0°C=273.15 K15°C=15+273.15=288.15 K Calculation of 1/T: 1T=1288.15=0.00347…

Q: 1. What is the phase of water at 1 atmospheric pressure at 0°C?_ 218 D atm Liquid water 2. What is…

A: Phase diagram is a graphical representation of different phases of a substance at a particular…

Q: 1. Pressure drops with altitude, and in fact Denver has an atmospheric pressure of 83.3 kPa,…

A: 1. As altitude increases atmospheric pressure will decreases.  The atmospheric pressure of Denver is…

Q: The vapor of water at ~ 5 oC has been neglected.  Find this pressure in your textbook and comment on…

A: The vapour pressure of water at  ~5 oC is ~6.5 torr.

Q: If you place 30.0 L of ethyl acetate (CAHsO2) in a sealed room that is 6.5 m long, 2.25 m wide, and…

A: Volume of ethyl acetate = 30 L = 30,000 mL density = 0.901 g / mL Therefore mass of ethyl acetate =…

Q: 4(a) For each of the following substances describe the importance of dipole-dipole interactions and…

A: Intermolecular forces like London dispersion force (LDF), dipole-dipole interactions and hydrogen…

Q: A sample of C6H14is placed in a cosed, evacuated 560ml container at a temperature of 289 K. It is…

A: At constant temperature, P1V1 = P2V2     ……. (1) Where P1 = 69 mm Hg, V1 = 560 ml, V2 = 314 ml,…

Q: 27. Which sample of water has the greatest vapour pressure? a. 50 mL at 30°C b. 100 mL at 120°C c.…

A: Colligative properties are the properties which depend on the number of atoms or molecules or ions…

Q: In kJ/mol, what is the enthalpy kf vaporization, Hvap, for a substance that has a vapor pressure or…

A: We will solve this question using clausius clapeyron equation.

Q: Describe the molecular basis of the property of water responsible for the presence of ice on the…

A: The melting point of water is 0oC. So whenever the temperature of the surroundings drops below 0oC,…

Q: The vapor pressure, P, of a certain liquid was measured at two temperatures, T. The data is shown in…

A: According to Clausius-Clapeyron plot, enthalpy of vaporization can be determined by plotting a graph…

Q: Cite real-life applications of cooling curve and determination of the freezing point of a substance.

A:

Q: As a vapor, methanol exists to an extent as a tetramer,(CH3OH)4, in which four CH3OH molecules are…

A: Concept introduction: Tetramer means four molecules are joined together. Hydrogen bonding is the…

Q: How much heat is required to evaporate 100.0 g of liquid ammonia, NH3, at its boiling point if its…

A: Given: Mass of NH3  = 100.0 g ΔHvap = 4.8 kJ/mol

Q: The graph of vapor pressure vs. temperature for three liquids, trichloromethane, tetrachloromethane…

A: The enthalpy change of a reaction can be calculated by Clausius-Clapeyron equation, ∆Hvap=R…

Q: How much heat (in kJ) is required to convert 423 g of liquid H2O at 24.8°C into steam at 147°C?…

A:

Q: The vapor pressure of water at 55ºC and 65ºC are 118.1 torr and 187.7 torr, respectively. What is…

A:

Q: What is the delta H vap of a liquid that has a vapor pressure of 621 torr at 85.2 C and a boiling…

A: dHvap is called the heat of vaporization which is the amount of heat required to convert a substance…

Q: At 100.000C, the Vm of vapor water is 30.20 L/mol and that of liquid water is 0.0188 L/mol. (a)…

A: Given: Molar volume of vapor= 30.2 L/mol Molar volume of liquid water = 0.0188 L/mol Boiling point,…

Q: The vapor pressure, P, of a certain liquid was measured at two temperatures, T. The data is shown in…

A: Plot of  ln(P) Vs 1/T, to determine the enthalpy of vaporisation.

Q: Please just indicate if it's True or False. a. When placed in a glass capillary tube, H2O will form…

A: a. When placed in a glass capillary tube, H2O will form a concave meniscus. The given statement is…

Q: This yiaph shows how the vapor pressure of three liquids varies w temperature: 900t 800- 700- 600…

A:

Q: Butane, C4H10, has a boiling point of -0.5 °C (which is 31 °F). Despite this, liquid butane can be…

A: Given:

Q: 1. How can you relate boiling point elevation in cooking? Explain.

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: The formula that relates vapor pressure and temperature is called the Clausius-Clapeyron 2.) The…

A:

Q: The graph of vapor pressure vs. temperature for three liquids, trichloromethane, tetrachloromethane…

A: The graph of vapor pressure-temperature curve are based on the fact that boiling points are affected…

Q: how many molecules of water are present in a room measuring 20 × 10 × 5 ft?

A:

Q: In what phase does water exist at its triple point?

A: Triple point of a substance is that temperature value where it exist in all of its possible states…

Q: Part 1: Methanol and toluene are flammable liquids whose vapor pressures at 68ºF (20ºC)…

A: Part 1: Given, vapor pressure of methanol at 68oF (20oC) is ---- 96 mmHg vapor pressure of toluene…

Q: Which of the following are true of all liquids? (Mark all that apply) Liquids expand to fill their…

A:

Q: Carbon tetrachloride displays a triple point at 249.0 K and a melting point (at 1 atm) of 250.3 K.…

A: The temperature at which the solid transform into liquid is called melting point.

Q: Which one of the following liquids would you expect to have the highest vapor pressure at room…

A: E option is correct. Carbon disulfide is the correct answer. Lower the boiling point, higher the…

Q: The following compounds, listed with their boiling points, are liquid at –10ºC: butane, –0.5ºC;…

A: The boiling point and vapour pressure of solution are related inversely to each other.

Q: Suggest a reaction that leads to the formation of a triglyceride molecule, starting with glycerin…

A: Glycerin reacts with carboxylic acid to form triglyceride molecule.

Q: 578,070 J of heat is requred to raise the temperature of 15.0 moles of liquid methanol, CH3OH, from…

A: ow much heat is required to raise the temperature of 230 g230 g CH3OH(l)CHX3OH(l) from 22.0 ∘C22.0…

Q: Which organic liquid, ethanol or methanol, exhibited the largest vapor pressure? Explain this in…

A: Vapor pressure : The vapor pressure of a substance is defined as the pressure at which a gaseous…

Q: The Antoine Equation can be used to estimate vapor pressure at various temperatures for different…

A:

Q: The vapor pressure of liquid hexane, C6H16, is 100. mm Hg at 289 K A sample of C6H14 is placed in a…

A: NOTE : There is a typing error in the question. It will be 289 K or 288 K for both the cases and not…

Q: Consider a planet where the pressure of the atmosphere at sea level is 2500 mmHg. Does water behave…

A:

Q: Q3b. Draw and explain the phase diagram of sulfur system. At 200 °C, the specific volume of water…

A:

Q: Diethyl ether (CH3CH2OCH2CH3) was one of the first chemicals used as an anesthetic. At 34.6°C,…

A: Given. the vapour pressure of diethyl ether at  34.6°C = 760 atm the vapour pressure of diethyl…

Q: Why do do volatile substances,like alcohol and acetone, produce a cooling effect on a surface from…

A: Volatile substances are those substances that can change their state from liquid to vapor phase…

Q: The vapor pressure of liquid methanol, CH3OH, is 40.0 mm Hg at 278 K. A sample of CH3OH is placed in…

A:

Q: The vapor pressure of liquid pentane, C5H15, is 40.0 mm Hg at 244 K. A sample of C5H12 is placed in…

A: Since the vapour pressure at 243 K is approximately = vapour pressure at 244 K hence the vapour…

Q: The vapor pressure of liquid bromoethane, C₂H5Br, is 40.0 mm Hg at 246 K. A sample of C₂H5Br is…

A: Given :  Vapour pressure of bromoethane at 246 K = 40.0 mm Hg  Temperature in vessel = 365 K…

Q: If you place 10.0 L of heptane (C7H16) in a sealed room that is 5.25 m long, 2 m wide, and 2.75 m…

A: Answer: Ideal gas equation is: PV=nRTPVRT=nn=PVRThere:n=number of moles of gasP=pressure of…

Q: The figure shows the phase diagram corresponding to the element sulfur. Sulfur exists as liquid,…

A: The graph of phase change with P vs T is given as:

Q: The vapor pressure of liquid iodomethane, CH3I, is 40.0 mm Hg at 249 K. A sample of CH3I is placed…

A: The answer is as follows: