Molar Mass Of Unknown Volatile Liquid

Decent Essays
Molecular weights, also known as molar mass is the mass of a molecule in grams per mole, or the sum of the component atomic masses. A volatile liquid is a substance easily evaporated at normal temperatures. The molecular weight can be found by determining the mass of a vapor under known conditions of temperature, volume and pressure. Once the pressure, volume and temperature are determined the moles of the gas can be calculated by using the Ideal Gas Law, in which PV =nRT. In this experiment, the molar mass of an unknown volatile liquid will be identified using the ideal gas

Related Documents

  • Improved Essays

    This can be titrated to determine the number of moles. Once equilibrium hits, the number of moles and weight of the sample can be determined.…

    • 539 Words
    • 3 Pages
    Improved Essays
  • Decent Essays

    3.03 Calorimetry Lab

    • 136 Words
    • 1 Pages

    The densities of 3 different solutions, water, saltwater, and an unknown solution, were calculated using a triple beam balance and a graduated cylinder. Density was also used to discover how much zinc and copper are found in a penny. The following results were found: water’s density, 1.02 g mL-1; saltwater’s density, 1.05 g mL-1; and the unknown substance labeled two’s density, 1.04 g mL-1. The percent error was calculated for water’s density as 2%. The composition of a penny was calculated using volume by water displacement and the mass of the pennies.…

    • 136 Words
    • 1 Pages
    Decent Essays
  • Improved Essays

    A graduated cylinder was used to measure 200mL of distilled water into an Erlenmeyer flask and then 40mL of 0.6 M NaOH was added to the distilled water in the flask. The flask was then plugged with a rubber stopper and shook in order to mix the solution. A buret was then washed, rinsed with distilled water, and then 5 mL of the NaOH diluted solution. After the cleansing of the buret, it was then filled up with the NaOH diluted solution. The dilution of the solution was calculated to find the molarity of the NaOH.…

    • 281 Words
    • 2 Pages
    Improved Essays
  • Improved Essays

    Gummy Bear Experiment

    • 593 Words
    • 3 Pages

    For our diffusion experiment our group decided to work with salt water and gummy bears. Our experiment tested the weight of the gummy bears per salt dilutions. Our tests included 1g 2.5g 5g, 1.5g, and 10g of salt diluted with water. We knew that the higher the concentration of salt diluted into the water the heavier the diffused gummy bear would be, therefore we measure weight as our numerical data. My hypothesis was that the 10g dilution of salt would have the gummy bear with the largest mass.…

    • 593 Words
    • 3 Pages
    Improved Essays
  • Decent Essays

    Hydrogel Lab Report

    • 220 Words
    • 1 Pages

    We measured the mass of the grains and polymers. The grain's mass was 2.1 grams after we subtracted the Dixie cup. The polymer's mass was over 210 grams because of the mixture. To construct the experiment we carefully cut open the diaper over a ziploc bag and carefully collected the grains into a corner of the bag avoiding breathing them in. We then cut the corner of the grains into an ice cream cone shaped and dumped them into a Dixie cup to be measured.…

    • 220 Words
    • 1 Pages
    Decent Essays
  • Improved Essays

    Paper Towel Lab

    • 723 Words
    • 3 Pages

    The control group was Brawny brand. The experimental group was Bounty, White Cloud, Homestore, Walmart Brand, and Sparkle. First, move one of the brand’s a paper towel sheets to a balance to see what the mass is. Then, take the dropper and drop water on the flat paper towel…

    • 723 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    Acceleration Lab Report

    • 410 Words
    • 2 Pages

    The definition of an accelerant is a substance that accelerates the speed of fire or makes a fire more intense (Accelerant | Define Accelerant at Dictionary.com, n.d.). When forensic laboratories have debris that was collected from a crime scene they can use either the Headspace or the Vapor Concentration techniques to determine if there was an accelerant used. Both techniques use Gas Chromatography, which is separating mixtures based on their distribution between a stationary liquid phase and moving gas phase (Saferstein, 2011). The Headspace Technique was developed in the 1980’s to aid in explaining the odor compounds found in the air surrounding objects such as plants, flowers and food (Headspace technology - Wikipedia, the free encyclopedia, n.d.) Headspace analysis is the investigation of the components present in the gas, which is found at the top of the vial (Labhut Education Centre | Principles of GC Headspace Analysis, n.d.).…

    • 410 Words
    • 2 Pages
    Improved Essays
  • Improved Essays

    By adding Hydrochloric acid into solid Magnesium, in Data table #2, when Hydrochloric acid was first been added to solid Magnesium, the ribbon immediately start to bubble and producing fumes at the same time with a burning sound. Magnesium start to turn into a white liquid form. After the bubble start to disappear, more Hydrochloric acid was added, and the reactions repeats. Until none of the shiny silver Magnesium ribbon can be seen, and there is no more bubble, the reaction is over.…

    • 877 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    Mystery Liquids Lab

    • 331 Words
    • 2 Pages

    In this lab we wanted to identify what the four mystery liquids were using density and their characteristic properties. We were initially given four liquids that were labelled numbers 1- 4, some graduated cylinders, and a scale, but we also knew that the 4 liquids were ethanol, vegetable oil, water, and cyclohexane. Using the mass that we found when we measured the liquid and using only 10 mL of the liquids we were able to calculate the density and easily identify the liquids and see if they matched the guesses we had made initially. Our results do confirm our hypothesis that you could identify liquids if you have their densities.…

    • 331 Words
    • 2 Pages
    Improved Essays
  • Decent Essays

    Mystery Mixture

    • 253 Words
    • 2 Pages

    Imagine trying to figure out one possible combination to a mixture, when there are over 100 possibilities. The 8th graders had to look at the physical and chemical properties, to somehow figure out the mixture. A group of students thinks that Baking Soda and Citric Acid is what’s in the mystery mixture. That group thinks that Baking Soda and Citric Acid is in it for a lot of reasons. One reason is that the mystery mixture has circular round objects in it and the Citric Acid is circular and round.…

    • 253 Words
    • 2 Pages
    Decent Essays
  • Decent Essays

    Yes, the amount of water in the lighter could be a huge factor for the molar mass of the butane to be more than the actual molar mass. The experimental molar mass would probably be more accurate if the lighter was weighed without being wet and after releasing the butane the lighter was set out for a while for the water to evaporate and it was weighed…

    • 68 Words
    • 1 Pages
    Decent Essays
  • Improved Essays

    However, this temperature was lower than the boiling point of acetone, the most volatile solvent possibly present in the unknown solution, pointing to a source of error in the measurement of the temperature. This could have been due to an inaccurate thermometer or to an error in placing the thermometer too high. Because the boiling point was so low, the more volatile solvent was estimated to be acetone, which has a boiling point of 56.5°C. After fraction A was collected, the temperature of the stillpot was increased and should have produced a steady increase in a plot of the temperature versus total volume distilled while fraction B (a mixture of the two components) was collected, until a second plateau at the boiling point of the less volatile component. The temperature of the stillpot needed to be increased after collecting fraction A because the liquid left in the stillpot was then composed of a higher percentage of the less volatile component, with a correspondingly higher vapor pressure, meaning that it would boil at a higher temperature.…

    • 958 Words
    • 4 Pages
    Improved Essays
  • Great Essays

    Molar Volume of a Gas Lab The purpose of the lab was to do an experiment to determine the molar volume of hydrogen gas at standard temperature and pressure, or STP. To start the experiment, a beaker was filled with water and then a cage was created with a copper wire. A piece of magnesium was cut and placed inside the cage in order to keep the reaction going until all of the magnesium reacted with the hydrochloric acid. The eudiometer tube was filled with 15 mL of hydrochloric acid and water and then plugged with a one-hole rubber stopper that held the cage in place, ensuring that the magnesium would react with the excess hydrochloric acid.…

    • 1741 Words
    • 7 Pages
    Great Essays
  • Improved Essays

    Intermolecular Forces

    • 1213 Words
    • 5 Pages

    INTRODUCTION The trends in physical properties of organic compounds such as boiling points and melting points can be deducted from their structures, including size (molecular weight, surface area), shape and functional groups. These factors significantly influence the strength of the intermolecular forces of attraction present; and the nature and strength of intermolecular forces determine the variations in boilingpoints of organic compounds. The boiling point of a liquid is the temperature at which its vapor pressure equals the external or atmospheric pressure. At this temperature, every molecules of the liquid acquire enough kinetic energy to overcome the intermolecular forces attracting them to the other molecules.…

    • 1213 Words
    • 5 Pages
    Improved Essays
  • Improved Essays

    Boiling Point Lab Report

    • 820 Words
    • 4 Pages

    We notice that no change occur in appearance of oil even it being heat until 1900C. From the result obtained, we notice that the boiling temperature raise when salt and sugar is added but no changes occur when cornmeal and gelatin is added. Boiling point increase due to decrease of vapor pressure. Water does not vaporize easily because the surface area for water to escape to the surrounding is decreasing when solute like salt and sugar are added to it. More energy are required to increase the vapor pressure of sugar solution or salt solution to exceed the atmospheric pressure so that…

    • 820 Words
    • 4 Pages
    Improved Essays