Ethyl chloride is sold as a liquid (see photo) under pressurefor use as a local skin anesthetic. Ethyl chloride boils at 12 °Cat atmospheric pressure. When the liquid is sprayed ontothe skin, it boils off, cooling and numbing the skin as itvaporizes. (a) What changes of state are involved in this useof ethyl chloride?

Q: 16) 1-butanethiol, one of the compounds giving skunks their distinctive odor, freezes at -115.7°C…

A:

Q: How much EKG is required to melt 12.32 g of ice?

A: H2O (s) ---> H2O (l)  ∆H = 6.02 KJ

Q: Which liquid has the highest heat of fusion and heat of vaporization?

A: Heat of fusion: it is change in heat of a system resulting from providing heat energy to a substance…

Q: A phase is a physical property of which describes the distance of molecules of matter. Phase also…

A:

Q: Which of the following physical processes are exothermicfor water—freezing, boiling, condensing,…

A: Those chemical process which involves absorption of heat are named as endothermic process. However,…

Q: The boiling points of liquids A and B are 65 °C and 145°C, respectively. Which of these liquids…

A: Given: Boiling point of liquid A = 65 oC And the boiling point of liquid B = 145 oC

Q: Explain what determines a substance’s state at a giventemperature.

A: The intermolecular forces between the particles determine the state of a substance.

Q: The following compounds are liquids at room temperature. Which among these compounds is the MOST…

A: Viscosity: During the motion in liquid different layers of liquid will have different rates. The…

Q: Rank the elements or compounds in the table below in decreasing order of their boiling points. That…

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

Q: Which of the following statements do liquids and gases have in common? Immersive Reader A) Neither…

A: Given statements about liquids and gases: Neither liquids nor gases have a definite shape. Both…

Q: How much heat is given off when 32.0 grams of steam cools from 110°C to ice at -40°C?

A:

Q: What is the mass of a sample of water at 100 degrees Celsius resulting from the release of 3,820…

A: Since the heat of condensation of water = 40.65 kJ/mol  And since 1 KJ = 239 cal Hence 40.65 KJ/mol…

Q: What is the name of the phase change that occurs when ice left at roomtemperature changes to liquid…

A: Ice is the solid form of H2O. Water is the liquid form of H2O.

Q: Which of the following liquids has the higher vapor pressure at 25 °C: water or mercury?

A: The temperature at which the vapor pressure at the surface of a liquid is equal to the pressure…

Q: ow do you account for the fact that solids and liquids generally expand when heated?

A: In general, the thermal treatment of solids and liquids results in the expansion of state.

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: A phase is a physical property of which describes the distance of molecules of matter. Phase also…

A: Given : We have to tell which statement is true.

Q: List the three states of matter in order of (a) increasingmolecular disorder and (b) increasing…

A: increasing molecular disorder : gas>liquid>solid

Q: Vhat is the final temperature, how much water is there, and how much ice is there if 824g of ce at…

A:

Q: If you wanted to raise the temperature of 5.00g ice at -9.56ﾟC up 105.0ﾟC how much energy would it…

A: The question is based on the concept of chemical thermodynamics. we have an ice sample. we have to…

Q: How much energy is required to heat 135g of ice from -55.3degrees C, to steam at 155.8degrees C?

A: Energy required to heat 135g of ice from -55.3 °C, to steam at 155.8 °C is to be calculated.

Q: Single term for liquids and solids phase. The distances of particles in solids  and liquids are more…

A:

Q: Is the boiling point of a liquid higher, lower, or the same at a higher altitude? Explain your…

A: Boiling point of liquid = the temperature at which vapor pressure of liquid become equal to…

Q: 1. Boiling Point OH MgO но NaCI A B E F G H

A:

Q: What is the name of the direct phase change of liquid to gas?

A: Vaporization is the process of transfer of phase from liquid to gas.

Q: Substances like hydrogen, which is a gas at room temperature and pressure, can often be liquified or…

A: To condense H2 ,temperature given is -252.9℃ To freeze H2 ,temperature given is -259.2℃ To find:…

Q: Write the balanced chemical equation for the Haber–Bosch process (i.e., the combination of nitrogen…

A: Haber–Bosch process: It is the process of production of ammonia from nitrogen and hydrogen.…

Q: Non-fluid is a classification of matter, where its molecules are rigid or fixed and they don't move.…

A: Non-fluid :-  It is a matter, where its molecules are rigid or fixed and they don't move. Find out…

Q: How long (in seconds) would it take a 50.0 watt (1 watt = 1 J/s) heater to melt 10.02 g of Au(s)…

A: Given : Mass of gold = 10.02 g Initial temperature of gold = melting point temperature = 1064 oC…

Q: How many grams of ice at -15.0degrees celsius must be added to 50.0 mL of water at 80degrees celsius…

A: We know that the system at higher temperature loses heat and the system which is at lower…

Q: A 950mL of ethyl alcohol poured into a 1000mL Pyrex container at -20°C (ethyl alcohol is still…

A: Since, the temperature is increased and the constant pressure is maintained, we can use the Charles…

Q: Use the following to answer the next 2 questions I II III Compound HHH HHH HICIH HICICIĊ-Ċ-C-0-H 138…

A: Among the given three compounds, I, II, and III branching increases from I to III.

Q: What is the physical state of tungsten (solid, liquid, or gas) at a temperature of 5993K if the…

A: At any temperature below the melting point temperature the physical state of tungsten will be solid.…

Q: Solids, liquids, and gases are the three most commonly accepted phases of matter. Explain the…

A: solids have a very distinct shape and volume, liquids have a precise volume and takes the shape of…

Q: Hikers climbing Mount Everest discovered it took much longer to cook a boiled egg than it does at…

A:

Q: A 214g sample of water at 78.8o Celsius is taken to freezing point 0 Celsius .How much energy was…

A: The amount of heat released in taking water from 78.8oC to 0oC can be determined as follows: Q =…

Q: Which state(s) of matter are compressible? Which state(s) of matter are not compressible? Explain.

A: There are three states of matter 1. Solid State 2. Liquid State 3. Gaseous State

Q: Which liquid, water or hexane (C6H14) would be O water O hexane O impossible to tell

A: As we know, like dissolves like  Means, polar substance dissolved in polar solvent and non-polar…

Q: 11. In each of the following pure substances or mixtures nam e the strongest intemolecular force.

A: Intermolecular forces are those which make interaction between molecules. These are of several…

Q: (1.3)Which of the following techniques can separate the homogeneous mixture of two liquids with…

A: Decanting is the method where two immiscible liquids are separated from each other by pouring one…

Q: How do solids and liquids behave differently?

A: Solid and liquid are two different states of a matter

Q: As a metal such as lead melts, what happens to (a) theaverage kinetic energy of the atoms and (b)…

A: a) As a metal such as lead melts, the average kinetic energy of the atoms increases. As the…

Q: As a liquid subatance freezes, the particles become ____, and they have ___ attraction for one…

A: As a liquid subatance freezes, the particles become ____, and they have ___ attraction for one…

Q: A quantity of ice at 0oC is added to 64.3 grams of water in a glass at 55oC. What temperature will…

A: The ice is melting.  Hence it will need energy  And since the temperature of water is  55oC Hence…

Q: Which of the two liquids is denser; if combined, which liquid would sink, which would float?

A: Here no liquid is given .

Q: The diagram shows the changes in state of water (H,O). What is the process Z called? Solid Liquid…

A: Water exists in three states: Solid, liquid and gas. These states are interconvertible into each…

Q: Can you now recognize me? Direction: Identify the property of water shown in the pictures below.…

A: The pics given are,

Q: 20. Which state of matter exhibits the highest degree of molecular motion?

A: Higher the entropy, higher will be the molecular motion.