Jamaica Gleaner Death Notices September 2021, Articles B

This website uses cookies to improve your experience while you navigate through the website. *Response times may vary by subject and question complexity. Q:Define the boiling point? When, Q:Which of the following molecules can participate in any kind of hydrogen bonding with water? 5. The Boiling Point constant for cyclohexane is 2.79C/m. These formulas vary in complexity and accuracy. HCI When water and bromoform are mixed, two layers form. 161 to 159 C; 258 to 254 F; 112 to 114 K, 27.8 to 28.2 C; 81.9 to 82.7 F; 300.9 to 301.3 K, = 8.3144 = Universal gas constant, in J/(K mol), = The liquids normal boiling point, in K, = The liquids critical temperature, in K. This cookie is set by GDPR Cookie Consent plugin. 8 What is the principle of boiling point? 200- . Just about a minute of boiling water is enough to kill the microorganisms. O CH4 < C2Hg < C3H8 OH Q:1. With ethyl alcohol? Show transcribed image text Expert Answer Transcribed image text: 5. Vapour pressure (P1)=400 torr. The cookies is used to store the user consent for the cookies in the category "Necessary". It freezes at negative 95 degrees, A:Boiling point of acetone = 560C In heavysnow areas,Salt the roadsto, Q:Cite four real-life applications of cooling curve and determination of the freezing point of a, A:A substance generally exists in one of the three states of matter that is solid, liquid, and vapor., Q:1. Analytical cookies are used to understand how visitors interact with the website. Liquid helium, on the other hand, has the lowest Boiling Point - 4.2C above absolute zero. Both solid because their melting point is above 20 degrees C. Could you determine the density of zinc chloride using water? The boiling point of toluene at 670 mm Hg is 106.3 degrees Celsius. c. trigeminal a. optic B Hexane: 14.27 mL (greater) A:The 3 states of matter generally differ in the arrangement of particles and the force of attraction, Q:Carbon tetrachloride. "*"M"_{"molar"})/""`, `"1.2E^-6m/mol"=("28.085g"*"44.01g/mol")/"997kg/m"`, Boiling Point is the temperature at which a liquid starts to boil and transforms to vapor and is represented as, Boiling Point is the temperature at which a liquid starts to boil and transforms to vapor is calculated using. MgO Base your answers to questions on the illustration below, which shows a mountainous region cut by a large valley in its center. A correction is needed 2023 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. For a given pressure, different liquids will boil at different temperatures. saturated fat, turns into, A:The fatty acids are long-chain aliphatic molecules with the carboxylic acid functional group. The amount by which the Boiling Point changes is directly proportional to the amount of soluble added. Boiling occurs when the vapor pressure of a liquid equals the air pressure of the atmosphere above the liquid. CH.CN CH3CI Calculate the molecular weight of the compound. How to calculate Boiling Point using this online calculator? Hence, cyclohexane has a higher boiling point. Can you work out why it starts at that particular time? Weaker the intermolecular forces, lower, Q:Which of the following molecules can participate in any kind of hydrogen bonding with water? Boiling, Q:In addition to filling in the blanks below, show all of your work for this problem on What is its volume in mL? The boiling point of toluene at 670 mm Hg is 106.3 degrees How to calculate Boiling Point using this online calculator? What term is used to describe a substance that readily evaporates at room temperature because of a high vapor pressure? if air bubbles were trapped in your solid beneath the liquid level in your density determination, what error would result in the volume measurement? Q:If a 100-mL sample of a volatile liquid such as diethyl ether is introduced into a 250-mL flask, A:When a 100-mL sample of a volatile liquid such as diethyl ether is introduced into a 250-mL flask,, Q:5. The equation detailed above uses a known pressure and temperature relationship with a known change in temperature with change in pressure. Q:Question 16: which of the following molecules has the highest boiling point? You Why was the decision Roe v. Wade important for feminists? Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. Water tends to boil at a relatively lower temperature when it is being boiled at a higher altitude. Ebullioscopic constant for benzene: 2.53 C/m and Boiling Point of pure benzene: 80.1C, NCERT Solutions for Class 12 Business Studies, NCERT Solutions for Class 11 Business Studies, NCERT Solutions for Class 10 Social Science, NCERT Solutions for Class 9 Social Science, NCERT Solutions for Class 8 Social Science, CBSE Previous Year Question Papers Class 12, CBSE Previous Year Question Papers Class 10. An 8.82-g sample of Br2 is placed in an evacuated 1.00 L flask and heated to 58.8 C, the normal boiling . The, Q:Atmospheric pressure decreases as altitude increases. Is toluene miscible with water? O CH,, Q:Which molecule would have the strongest tendency to form hydrogen bonds with other identical, Q:which has a higher boiling point geh4 or pbh4. What would be the effect of this error on the calculated density? Determining boiling point based on pressure can be accomplished using equations, estimation, nomographs, on-line calculators, tables and graphs. BP_{corr}=BP_{obs}-(P_{obs}-760\text{ mmHg})\times 0.045^o\text{C/mmHg}, 100\text{C}=BP_{obs}-(600\text{ mmHg}-760\text{ mmHg})\times 0.045\text{C/mmHg}, 100\text{C}=BP_{obs}-(-160\text{ mmHg})\times 0.045\text{C/mmHg} = BP_{obs}+7.2, BP_{obs}=100\text{C}-7.2\text{C}=92.8\text{C}, \ln{\frac{P_1}{P_2}}=-\frac{L}{R}\times (\frac{1}{T_1}-\frac{1}{T_2}), Stanford University: Pressure-Temperature Nomograph, University of Missouri St. Louis: Distillation, National Institute of Health NCBI: Quantitative structure-property relationships for prediction of boiling point, vapor pressure, and melting point, NASA Technical Reports: Altitude-Pressure Tables Based on the United States Standard Atmosphere, Bulletin of the American Meteorological Society: Methods for Computing the Boiling Temperature of Water at Varying Pressures, US Dept. It has been experimentally proven that adding any form of non-volatile soluble to a liquid increases its Boiling Point. A:Lower is the intermolecular forces lower is the boiling point. You can evaluate the boiling point of crotonic acid quite accurately now. Yes! If you want any, Q:Which of these molecules will not form hydrogen bonds with water? How do you know? O, A:Boiling point is the temperature at which a liquid boils (i.e liquid is converted to vapor). In general, an approximation of the drop in boiling point for water can be made based on altitude. It was developed in the 1940s along with the development of petrochemicals, together with plastics, synthetic rubber and synthetic fibers. The temperature at which vapor pressure of liquid becomes equal to atmospheric, Q:The hypothetical compound X has molar mass 75.89 g/mol and vapor pressure of 596 mmHg at 22C. 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:In the table, rank each substance by its boiling point (1 being the lowest, 4 being the highest) These values correspond to the normal atmospheric pressure at the sea level and boiling point of water. What is the boiling point of hexane at 670 mm Hg? How do you find the boiling point of heat of vaporization? Who is Katy mixon body double eastbound and down season 1 finale? Calculating boiling point based on pressure can be done using several different formulas. A) CH, )PH3 Surfactant, also known as surfactant, is a substance that can significantly change the surface tension of a liquid or the interfacial tension between two phases. A. The simple answer to this question is that the boiling point of water is 100 C or 212 F at 1 atmosphere of pressure ( sea level ). The boiling point. (p. 38 - Table 1) (Nomograph) 40.1 C 36.3 C O 43.9 C This problem has been solved! We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. it is defined as the temperature at which the, A:Boiling point is the temperature at which the vapor pressure of the liquid becomes equal to the, Q:Which one of the following should have the lowest boiling point? These cookies will be stored in your browser only with your consent. You can boil water to use it as a disinfectant. We provide you year-long structured coaching classes for CBSE and ICSE Board & JEE and NEET entrance exam preparation at affordable tuition fees, with an exclusive session for clearing doubts, ensuring that neither you nor the topics remain unattended. We have grown leaps and bounds to be the best Online Tuition Website in India with immensely talented Vedantu Master Teachers, from the most reputed institutions. What is the substance? (1 kj = 1000j) 5. increasing boiling point \mathrm{S}(\mathrm{s})+\mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{SO}_2(\mathrm{~g}) & \Delta H^{\mathrm{a}}=-296.8 \mathrm{~kJ} \\ O D. N2 Knowing your BMR (basal metabolic weight) may help you make important decisions about your diet and lifestyle. See Answer Show transcribed image text Expert Answer E)H2O, A:The molecule that has the highest boiling point is to be identified-PH3H2SHClSiH4H2O, Q:10 Which of the following should have the lowest boiling point? Hexane's boiling point at 760mm HG is 69. But did you know that water is a great and powerful solvent? What are the Physical devices used to construct memories? equation. 100 F paper for, A:Heat =44.0kJ/mol = 44.01000j/mole = 44000j/mole The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Find answers to questions asked by students like you. B. NH3 You subtract 3.1 from 69 to get 65.9 degrees celcius at 670 mm Hg. Predict which liquidglycerol, HOCH2CH(OH)CH2OH, or hexane, C6H14has the greater surface tension. 0.05579 Why or why not? The boiling point of methylene chloride at 670 mmHg is 36.2C. Hexane's boiling point at 760mm HG is 69. Insert all of the values into the Clausius-Clapeyron equation to find the boiling point T. Ebullioscopic constant for benzene: 2.53 C/m and Boiling Point of pure benzene: 80.1C, 1.1 = \[\frac{1000 \times 2.53 \times 10}{M \times 200}\]. can be used to find an unknown boiling temperature for water. mixed would give a higher boiling point than t = 356.58 + 0.0731 (p - 760) 0.000 040 (p - 760)2 + 0.000 000 03 (p - 760)3 p (mm.) Karen taught middle school science for over two decades, earning her Master of Arts in Science Education (emphasis in 5-12 geosciences) along the way. This is equal to 223.3 degrees Fahrenheit. \end{array} One formula for calculating the boiling point of water uses the known boiling point at sea level, 100C, the atmospheric pressure at sea level and the atmospheric pressure at the time and elevation where the boiling takes place. is diphenylmethane solid or liquid at room temp? point of 56 degrees Celsius at a pressure of 760mm/Hg. The boiling. As for atmospheric pressure, the pressure units cancel out, so which units are used, whether mmHg, bars, psi or another unit, is less important than being sure that all the pressure measurements are the same units. Let T0b denote the Boiling Point of a pure liquid, and Tb denote the Boiling Point of a solution (solute + pure liquid). 53o CIt will be somewhat lower than 329 K (57oC), the boiling point at standard 760 mmHg, but it is not calculable. The compound has a boiling point of approximately 60.5 degrees (1) in water and (s) in cyclohexane and alcohol. 760.0 mmHg? Perform boundary checking on the rating value. the density of a liquid whose boiling point is 55 to 57C was determined to be 0.77m+-0.05g/mL. What are the Physical devices used to construct memories? new ClockDisplay() How do you measure the density of an unknown solid and liquid in lab? Which is correct poinsettia or poinsettia? Necessary cookies are absolutely essential for the website to function properly. Q:Rank the following liquids in order of increasing boiling points, from lowest to Q:What type(s) of intermolecular forces are NaCI However, in the case of the melting point of a liquid, impurities only end up decreasing it. You need to set different values if you are calculating the boiling point at altitude or are analyzing a different substance (which is done for you). This cookie is set by GDPR Cookie Consent plugin. 600. No, water does not boil faster than oil. The units of mmHg cancel each other out, leaving the units as degrees Celsius. First week only $4.99! what liquid is this? CCl4, has a vapor pressure of 213 torr at 40.C and 836 torr at 80.C. a liquid unknown was found to be insoluble in water and soluble in cyclohexane and alcohol. Change in Boiling Point of Solvent is the change in the boiling point of the solvent after adding a solute to it. Q:List the substances CCl4, CBr4, and CH4 in order of increasing boiling point. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. HBr 900 Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste, Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell, Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer, Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom, General, Organic, and Biological Chemistry. Why is it necessary to calibrate a thermometer and volumetric glassware? 50.0. \mathrm{SO}_2(\mathrm{~g})+1 / 2 \mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{SO}_3(\mathrm{~g}) & \Delta H^{\mathrm{a}}=-98.9 \mathrm{~kJ} Boiling point of water at 750 mm Hg is 99.63C. The study material provided by Vedantu is easy to understand and engaging as well, thereby helping students to study with ease and minimum hassle. values to determine which has the greater molar solubility: Damage to the ________ nerve could result in defects of eye movement. increasing, A:Vapour pressure is the pressure exerted by the gas in a closed container that exists in equilibrium, Q:Cite two real-life applications of cooling curve and determination of the freezing point of a, A:Applyingcoolingcurvesand freezingpoints to real life:1. The cookie is used to store the user consent for the cookies in the category "Analytics". Results of the most recent blood tests indicate that Ben is anemic. What are the 4 major sources of law in Zimbabwe. Paint thinner is mostly acetone. Rank the following, A:Thefollowingcompoundsintermsofdecreasingboilingpointwithhighesttolowestorderofboiling, Q:The vapor pressure of liquidcarbon disulfide,CS2, is100. mm Hg at268K.A sample ofCS2is placed, A:A substance exists in the liquid form at the pressure above its vapor pressure, at the pressure, Q:Ionic liquids are a new class of organic salts that are liquids at low temperature If a pulse is sent along section AAA, what is the wave speed in section AAA and the wave speed in section BBB ? Their manufacture is subject to human error, and need to be calibrated. The Kb for water is 0.512C/m. A man who is 5 ft. 8 in. Kp= vapor pressure of benzene What substance has a boiling point of 58 degrees Celsius at 670 mm Hg? 5. A. HF B. CH4 C. NH3 D. HCOOH, Q:What will be the boiling point of ethanol at 650 mmHg when the normal boiling point at 760 mmHg is, A:The enthalpy of the vaporization of ethanol is38.7 kJ/molat its boiling point (78.3oC). A:Boiling point of a compound is directly proportional to the surface area. Vedantu provides detailed and elaborate explanations with regard to a multitude of concepts, along with examples, problems & solutions, necessary tables, formulas, etc., of the same. 25.5 tall weighs 160 lb. Toluene is not miscible with water, but is miscible with ethyl alcohol. Allows for the accuracy of results. denote the Boiling Point of a pure liquid, and T. denote the Boiling Point of a solution (solute + pure liquid). You OH Is p-dibromobenzene a solid or liquid at room temperature? Solution for What would be the boiling point of methylene chloride at 670 mm Hg? Because of the polar, Q:Which of the following structures would you expect to have the lowest boiling point? A student dissolves 11.17 grams of zinc, A:Given:Initialtboilingpointofwater=100CmassofZnI2=11.17gmolarmassofZnI2=319.2gforwater. What is the boiling point of cyclohexane at 760 mmHg? The boiling point of methylene chloride at 670 mmHg is 36.2C. What is boiling point and normal boiling point? These values correspond to the normal atmospheric pressure at the sea . Median response time is 34 minutes for paid subscribers and may be longer for promotional offers. A:The compounds given are CCl4 i.e. Q:In the determination of molar mass of a The. What is the solid? In cm^3? This calculation is done using the clausius-clapeyron For instance, if youre boiling water on the stove, and add even a pinch of salt to it, you will notice that the Boiling Point of the water will increase. (a) The interest of ionic liquids (ILs) as green solvents, Q:The vapor pressure of CCl3F at 300 K is 856 torr. A A:The temperature at which the solid transform into liquid is called melting point. HF What substance has a boiling point of 58 degrees Celsius at 670 mm Hg? Based on the principle, the solvents are capable of being vaporized at much lower temperature than their boiling points at the normal pressure. A:As per the request , the solutions of Q4 to Q6 are as follows: Q:acetone has a vapor pressure of 187 torr at 20 degrees celsius. Chart A - Enter the observed boiling point (or slide the bar) and click the lock. Temperature, atmospheric pressure, and the vapour pressure of the liquid are the three main things on which the Boiling Point of a particular liquid is based. For example, due to the change in atmospheric pressure at different altitudes, water boils at 100C (212F) at sea level, but at 93.4C (200.1F), at 1,905 metres (6,250 ft). What is chloroform boiling point at 670 mm Hg? Describe additional geologic evidence that might be found on the valley floor that would support. These cookies ensure basic functionalities and security features of the website, anonymously. We also use third-party cookies that help us analyze and understand how you use this website. BensValuesNormalValuesRedbloodcount3.1million4.66.2millionRBCs/mm3RBCs/mm3Reticulocytecount0.4%13%RedbloodcellsNormocytic,7.5mmNormocytic,7.5mmWhitebloodcount2800WBCs/mm3500010,000WBCs/mm3Hemoglobin9.0g/100mL1416.5g/100mLHematocrit27%4054%Prothrombintime20seconds1115secondsPlatelets200,000/mm3250,000400,000platelets/mm3\begin{array}{lll} & \text { Ben's Values } & \text { Normal Values } \\ \text { Red blood count } & 3.1 \text { million } & 4.6-6.2 \text { million } \\ & \text { RBCs } / \mathrm{mm}^3 & \mathrm{RBCs} / \mathrm{mm}^3 \\ \text { Reticulocyte count } & 0.4 \% & 1-3 \% \\ \text { Red blood cells } & \text { Normocytic, } 7.5 \mathrm{~mm} & \text { Normocytic, } 7.5 \mathrm{~mm} \\ \text { White blood count } & 2800 \mathrm{WBCs} / \mathrm{mm}^3 & 5000-10,000 \\ & & \mathrm{WBCs} / \mathrm{mm}^3 \\ \text { Hemoglobin } & 9.0 \mathrm{~g} / 100 \mathrm{~mL} & 14-16.5 \mathrm{~g} / 100 \mathrm{~mL} \\ \text { Hematocrit } & 27 \% & 40-54 \% \\ \text { Prothrombin time } & 20 \mathrm{~seconds} & 11-15 \mathrm{~seconds} \\ \text { Platelets } & 200,000 / \mathrm{mm}^3 & 250,000-400,000 \\ & & \text { platelets } / \mathrm{mm} 3\end{array} Speaking specifically, the boiling point will decrease with reducing pressure, and increase with increasing pressure. B Karen earned her Bachelor of Science in geology. The latter property is unique for each substance you can be sure that two samples of water will have the same latent heat. A teacher walks into the Classroom and says If only Yesterday was Tomorrow Today would have been a Saturday Which Day did the Teacher make this Statement? H2S A correction is needed to go from 760mmHG to 670mm Hg. 130 This is because of its, Q:Of C2H5OH and C3H5(OH)3 the one expected to have the higher vapor pressure is ________, and the one, Q:300 Nomographs use three scales to predict boiling point. What is the vapor pressure of water at 100C? A:MgCl2named as magnesium dichloride is a salt of magnesium and consists of two chlorine atoms which, Q:Which would you expect to have the higher melting You can learn more in the latent heat calculator. A:The question is based on the concept of boiling point. n, A:Benzene(l)Benzene(g) Whether camping or chemistry, predicting the boiling point can be challenging. C) CHOH At boiling point pressure, Q:One of these liquids is used as a "blowing agent" in the manufacture of polystyrene foam because it, A:Blowing agent is a substance ,that is capable of producing cellular structure through foaming, Q:he boiling point of 500.0L of water was determined to be 100.0C. Pure acetone has a boiling Calculate the dose in milligrams for a 150 lb person. What mass of NaCl would you add to 3.5 kg of water to raise the boiling point to 101.0C. Tc = 647.3 K and Pc = 221.2 bar (218.3 atm), the heat of vaporization is obtained as 42,060 J/mol. However, the value is not a constant. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Boiling Point is denoted by bp symbol. If an average man is 6 ft. tall, how many DNA molecules could be stacked end to end in a n average man? In the liquid, there are hydrogen bonds that form HC what liquid is this? sublimes, A:The question is based on the experimental technique of isolation of caffeine from tea leaves .. Why was the decision Roe v. Wade important for feminists? This is equal to 223.3 degrees Fahrenheit. It does not store any personal data. Celsius. Its latent heat of vaporization is, A:Given: Here is how the Boiling Point calculation can be explained with given input values -> 688.05 = 80.1*12. 177.4F (80.75C) Question: QUESTION 2 Pre-lab question #5: What would be the boiling point of methylene chloride at 670 mm Hg? Normal body temperature is 37.0 degrees C. What is the corresponding Fahrenheit temperature? Explain. Boiling occurs when the vapor pressure of a liquid equals the air pressure of the atmosphere above the liquid. 4) A liquid unknown has a boiling point of 58 C at 670 mm Hg. The boiling point of water depends on the atmospheric pressure, which changes according to elevation. 4.62 atm. the volume would seem like it's more than it actually is. She worked as a geologist for ten years before returning to school to earn her multiple subject teaching credential. 3-(3-Methylphenyl)propanoate. The phenomenon of boiling is pressure dependent and hence, the Boiling Point of a liquid may change depending upon the surrounding pressure. This temperature is dependent on pressure and the substance's latent heat of vaporization. [edit] Using Riedels equation. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Yes, an impurity will affect the Boiling Point of a liquid by increasing the latter. 5 Why is the boiling point of cyclohexane higher than hexane? Question: What is the boiling point of cyclohexane at 670 mmHg? What is the boiling point of methylene chloride at 670 mm Hg? carbon tetrachloride, CH4, CBr4, CF4 and CI4. What is the boiling point of water. Q:Why are the freezing and boiling points of water higher than would be expected for a compound of its, A:Water is composed of two atoms of hydrogen and one atom of oxygen. The value 760mmHg is standard atmospheric pressure in millimeters of mercury at sea level and 0.045oC/mmHg is the approximate change in water temperature with each millimeter mercury change in pressure. Do impurities affect the Boiling Point of a liquid? O2 < NO < N2 1.005 Example: What is the Boiling Point elevation when 147g of lactic acid (C6H105) is dissolved in 647g of cyclohexane (C6H12)? D, Q:9. are the substances lauric acid and stearic acid solid or liquids at room temp? Identify two common observations indicating some liquids have sufficient vapor pressures to noticeably evaporate? Explain the reason for the difference. D)SiH4 Compound 1 a) PH3 Assume that NaCl is completely dissociated. (Mean or Weighted MP) VP(mm Hg,25 deg C): 1.64E-012 (Modified Grain method) Subcooled liquid VP: 4.1E-010 mm Hg (25 deg C, Mod-Grain method) Water Solubility Estimate from Log Kow (WSKOW v1.41 . *Response times may vary by subject and question complexity. Calculate Hr\Delta H^{\mathrm{r}}Hr f for SO3\mathrm{SO}_3SO3 in kJ/mol\mathrm{kJ} / \mathrm{mol}kJ/mol, given the following data: S(s)+O2(g)SO2(g)Ha=296.8kJSO2(g)+1/2O2(g)SO3(g)Ha=98.9kJ\begin{array}{ll} Then. ln(kp1kp2)=HR(1T2-1T1). The correction is about 3.1. A. NaCl What solvent would you use to determine the density of zinc chloride? Your question is solved by a Subject Matter Expert. In general, the lower the atmospheric pressure, the lower the boiling temperature of any liquid. Why do you calibrate thermometers and pipets? A liquid was found to be insoluble in water and soluble in cyclohexane and alcohol; the unknown was found to have a boiling point of 58C at 670 mmHg. O CH4 Latent heat relates to the attraction between molecules, a property of the material that influences the rate of vaporization. The graphs, like the nomograph, use known values to create a curve or, as with the Clausius-Clapeyron equation, use the natural log of the pressure to develop a straight line. H-CEN:, A:For hydrogen bonding, a hydrogen atom should be attached with a highly electronegative atom like F,, Q:Which one of the following should have the lowest boiling point? The graphed line shows the known boiling point relationships, given a set of pressure and temperature values. Hexane's boiling point at 760mm HG is 69. What is the substance? A:Since you have asked multiple questions, we will solve the first question for you. Harris-Benedict calculator uses one of the three most popular BMR formulas. The vapour tends to increase with the increase in temperature, which affects the Boiling Point of the liquid accordingly. E Find answers to questions asked by students like you. 670 Millimeter Mercury (0C) (mmHg) = 0.88158 Atmospheres (atm) Visit 670 Atmospheres to mmHg Conversion Millimeter Mercury (0C) : Millimeter of mercury is a small pressure unit which represents the pressure pushing down due to gravity of any volume of liquid mercury which is 1mm high.