20. Which state of matter exhibits the highest degree of molecular motion? 21. Process involves the release of 590 calories per gram. 22. State of matter contains 80 calories per gram.

Q: Which two phases of matter meet at the critical point of a phase diagram? O liquid gas O solid

A: Phase diagram is a graph between temperature and pressure of a compound and the curve in the  phase…

Q: It is observed that 1.51 kcal of energy are released when a 21.7 g sample of an unknown liquid…

A: We know that   q = m·ΔHv in which q = heat energy, m = mass, and ΔHv = heat of vaporization Given…

Q: liquids

A: a) Given four liquids are -  HF, NaF, ClF, F2. Out of these 4 liquids NaF is the ionic compound with…

Q: Why must you record your boiling point when the vapor condenses (forms a ring of liquid) above the…

A: The question delves into the fundamental principles behind the measurement of boiling points using a…

Q: When a sample of 4°C water is cooled, it   expands.   remains unchanged.   Not enough information is…

A: Density is defined as mass divided by volume.

Q: Two different pure solids are melted, and one exhibits a melting point of 138 oC, while the other…

A: Compounds are formed from two or more elements. Compounds are characterized by different chemical…

Q: Fill in the blanks with the appropriate word or phrase.  1. The average kinetic energy of a gas…

A: Following are the filled blanks with appropriate words

Q: Select the substance with the highest viscosity A. hot motor oil B. honey at room temperature C.…

A: Viscosity is the resistance to flow. Means highly viscous fluid show higher resistance to flow. And…

Q: There are two glass test tubes (a and b) filled with different substances. Sort each given statement…

A: Tube (a) shows strong adhesive forces, because the substance is bound to the test tube wall.Tube (a)…

Q: Which phase change is an endothermic process? a) evaporation O b) deposition Oc) freezing

A: The energy difference between the products and reactants is known as the energy change of a…

Q: Describe the behavior of carbon dioxide gas when compressed at 13°C. it will boil it will condense…

A: The states of matter exhibited by a substance under different temperatures and pressures can be…

Q: Use vapor pressure. A student leaving campus for spring break wants to make sure the air in his dorm…

A: Given the temperature of room, T = 22 oC + 273.15 = 295.15 KThe dimension of the room =  3.41 m ×…

Q: A) Use the table to answer the question. Substance Boiling Point (°C) acetone 56 turpentine 160…

A: We are given different substance with their respective B.P as follows:

Q: The specific heat of ice is 0.492 cal /(g x °C). How many calories of heat are required to raise the…

A: Given: Specific heat capacity of ice= 0.492 cal/g⋅ oC Mass of ice = 100.0 g Initial Temperature of…

Q: Which of the following might be best described by the following set of properties? 1. white solid…

A: Given: The compound is a white solid with a melting point of 772 oC.

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: Use the diagram below to answer the following question. B D 1 atm 0.5 atm A 150 250 350 T,"C-…

A: Phase diagram: The phase diagram represents the different phases of the substance and the pressure…

Q: The properties of several unknown solids were measured. Solid Melting point A >1000 °C B 850 °C C…

A: Molecular solids  It is the solid which is held by van der Waals forces. These solids are soft,…

Q: If a sample of pure X is a mixture of liquid and gas, which point marks the highest possible…

A: Phase diagram: The phase diagram represents the different phases of the substance and the pressure…

Q: 24. The graph to the right represents the uniform cooling of a substance, starting with the…

A: When we cool the gas, it converts into a liquid state. On further cooling the liquid converts into…

Q: Liquid nitrogen boils at 77 K. This image depicts a sample of liquid nitrogen. Which image best…

A: The molecules are far apart in case of gases as the intermolecular force of attraction is least in…

Q: Which two states of matter meet at the sublimation boundary of a phase diagram? solid O liquid O gas

A:

Q: What is one property of solids that makes them fundamentally different from liquids? I hat is one…

A: Property of definite volume and shape at given temperature make solids fundamentally different from…

Q: A group of students recorded the melting points of two substances in the data table. Substance…

A: The data given is,

Q: Which fundamental force is responsible for chemistry and for holding solids together?

A: The fundamental force associated with electric and magnetic fields. The electromagnetic force is…

Q: Which of the following substances has the lowest vapor pressure at room temperature? O Hydrogen…

A:

Q: What are the two aspects of the molecular- level environments in solid, liquid and gaseous matter?

A: Matter exist in three physical states and they are solid, liquid and gases.  These three physical…

Q: PCI3 atomic metallic solid ionic solid molecular solid atomic nonmetallic solid

A: The objective of the question is to classify the type of solid that PCl3 (Phosphorus trichloride)…

Q: Water is able to travel against gravity, from the roots of a plant to the leaves at the top of the…

A: The tendency of a liquid to shrink into the minimum surface area possible is known as surface…

Q: t is observed that 1.94 kcal of energy are released when a 27.5 g sample of an unknown liquid…

A: Heat released when a substance is vapourised is equal to the mass times the heat of vaporisation..

Q: Classify the substance shown in the sketch below. You can click the other tabs in the sketch to get…

A: A question based on a mixture. The given substance in the image is to be distinguished based on its…

Q: s snowing outside! This process is described by

A: Snowing that means freezing of water.