In the Dumas Method for the determination of the molar mass of a vapor, it was assumed that * the volume of the flask is equal to the volume of the vapor inside it the volume of the flask is less than the volume of the vapor inside it the volume of the flask is greater than the volume of the vapor inside it the volume of the flask is 100mL

Q: In the Dumas Method for the determination of the molar mass of a vapor, it was established that the…

A: In the Dumas method mass of vapor is equal to the remaining condensed sample in the Erlenmeyer…

Q: This graph shows how the vapor pressure of three liquids varies with temperature:

A: Note: Since you have posted a question in multiple subparts , we will solve first part for you. To…

Q: . In relation with kinetic Molecular Theory why do solids directly evaporates?

A: Please find your solution below : According to Kinetic molecular theory the matter is made up of…

Q: In the Dumas Method for the determination of the molar mass of a vapor, the vapor inside the flask…

A: Since you have posted multiple unrelated questions, we are entitled to answer the first only.

Q: An ice cube is placed in a sealed container and heat is applied until the ice completely turns into…

A: As Ice is placed in a sealed container . If heat is applied then that ice cube melted down in that…

Q: Water exhibits a unique property of surface tension. What happens among the water molecules to cause…

A: Given that water exhibits a unique property of surface tension. We have to find the reason behind…

Q: What happens when the external pressure exerted on the liquid water and the vapor pressure of the…

A: When water is boiled in an open vessel, the external pressure is equal to the atmospheric pressure.…

Q: In the picture above, solid iodine is undergoing as it is heated and the iodine vapor is undergoing…

A: What is sublimation?A solid changing to a gas without passing through a liquid phase. Solidification…

Q: Why are non-metals gaseous at room temperature?

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Q: Give the postulates of kinetic molecular theory of matter. Explain the process of melting on the…

A: The following are the main postulates of the kinetic theory of matter: 1. Atoms and molecules are…

Q: What is the general relationship between the vapor pressure of a liquid and its temperature?

A: Vapor pressure of a liquid is referred to as the pressure exerted by the molecules of a liquid that…

Q: The following table displays the vapor pressure of a noble gas at several different temperature. Use…

A: Clausius - Clapyron equation says that lnP2P1=-ΔHvapR1T2-1T1 Boiling point is the temperature at…

Q: How do we measure the volume of unshaped solids? Please explain.

A: The method for determining the volume of a solid depends on its shape.   Regular Geometric Shapes:…

Q: Suggest some ways that the dipoles in London forces are different from the dipoles in dipole-dipole…

A: London forces and dipole dipole attractions are non covalent interactions.They are found in…

Q: In calculating the molar mass of the vapor using the Dumas Method, decreasing the value of the…

A: Option 3 i.e. a decrease in the value of molar mass. As we know while calculating the molar mass of…

Q: What is the process when a gas converts to a liquid? a) sublimation b) condensation c) evaporation…

A: the process when a gas converts to a liquid is condensation

Q: Calculate the final temperature of a mixture of 140.0  g of ice initially at -25.00 °C and 299.0  g…

A: Heat lost by water = Heat gained by ice  Specific heat capacity of water = 4.18 J/goC Specific heat…

Q: you may have heard someone use the figure of speech is slower than molasses in winter to describe…

A: The measure of resistance offered by a fluid to the motion of immersed object through them is called…

Q: Why is liquid water more dense than solid water?

A: The reason for, liquid water is more denser then solid water has to be explained.

Q: What are the key properties of liquids (in contrast to gases andsolids)?

A: Intermolecular forces refer to the type of interactions which are present in between atoms or…

Q: What changes water from a gas to a liquid phase

A: Conversation of gas to a liquid is called condensation. In gaseous phase, the molecules are far…

Q: The conversion of a gas directly to a liquid is called?     Vaporization     Sublimaiton…

A: Vaporization : In the vaporization , liquid is converted to the gas .  Sublimaiton : In the…

Q: Use the observation in the first column to answer the question in the second column. observation…

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Q: What temperature makes the part of the liquid hydrocarbon turn into a fully developed gas? O…

A: As per my assumption it is Boiling point because Critical point is a point of temperature where…

Q: Explain the properties of solids and liquids using the kinetic energy molecular theory.

A: The kinetic energy molecular theory state that if the space between the molecules is more then they…

Q: Use the graph to answer the following questions: Which liquid is the most volatile? most volatile:…

A: Volatility of any liquid is defined as the tendency of the liquid to convert into vapour form. More…

Q: Which of the following compounds has the highest vapor pressure? ОН

A: I would say option - 2nd          would have highest vapour pressure as it has lowest boiling point…

Q: In the Dumas Method for the determination of the molar mass of a vapor, the vapor inside the flask…

A:

Q: Topic- Around the word boiling point and vapor pressure Q- Before the water boils, describe the…

A: Boiling point is the temperature at which vapour pressure is equal to the atmospheric pressure.

Q: Use the observation in the first column to answer the question in the secc observation question At…

A: The enthalpy of vaporization is also known as the heat of evaporation or the heat of vaporization.…

Q: You may also assume X behaves as an ideal gas in the vapor phase. Suppose a small sample of X at -20…

A: Amount of heat added = 15 kJ/mol  Starting temperature of X = - 20 oC Since the starting temperature…

Q: Use the observation in the first column to answer the question in the second column. observation…

A: Given the enthalpy of vaporization of substance C is higher than that of substance D.  Given…

Q: Q1/ Four kilograms of water are placed in an enclosed volume of 1 m³. Heat is added until the…

A: Step : 1           Hey since you have posted multiple questions we will answer first question only.…

Q: Explain, using the KMT, why a gas is compressible and a liquid is not.

A: Using property of gas and liquid.

Q: Use the observation in the first column to answer the question in the second column. observation…

A: Vapor pressure is the pressure exerted by the vapor above the liquid on that liquid. Boling point is…

Q: Describe an experiment to show how pressure in liquid varies

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Q: In the Dumas Method for the determination of the molar mass of a vapor, it was assumed that * the…

A: To explain: The assumptions of the Dumas method.

Q: How is a solid described in the Kinetic Molecular Theory in terms of: average kinetic energy,…

A: according to Kinetic Molecular Theory, the properties of solid are described as below:i) in terms of…

Q: Use the graph to answer the following questions: Which liquid is the most volatile? most volatile:…

A:

Q: Determining the Volume of the Dumas Tube - If air bubbles were not removed from the Dumas tube,…

A: The molar mass of a substance can be obtained by relating the mass and the number of moles of the…

Q: Describe the changes in energy that occur and the particle arrangement as a substance that is liquid…

A: Substances can change phase often because of a temperature change. At low temperatures, most…

Q: Why helium and hydrogen gases not liquefied at room temperature by applying very high pressure?

A: The critical temperature of helium and hydrogen are as follows: Helium: -267.96°C Hydrogen:…

Q: Explain why water drops are spherical in the absence of gravity.

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Q: (s) (i) Define molar mass of a substance. (ii) State the method used to determine the molar mass of…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: What will not happen if you place water into a sealed container? O The water will all become vapor.…

A: We know at normal temperature water remains as liquid state. The water molecules at the surface has…

Q: Use the observation in the first column to answer the question in the second column. observation…

A: All three answer are based on two points which are given below Enthalpy of vaporisation direct…

Q: The water molecules form hydrogen bonds with themselves resulting in much stronger bonds than those…

A: The process of conversion of liquid molecules into vapour state is called evaporation . If the…

Q: Why does the temperature of a substance stay constant during a phase change such as vaporization?…

A: To explain : Why does the temperature of a substance stay constant during a phase change such as…