The enthalpy of vaporization of Substance x is 25.0 and its normal boiling kJ mol point is 101. °c. Calculate the vapor pressure of x at -187. °C. Round your answer to 2 significant digits. atm Explanation Check 0 x10 ? ⠀ alla Ar Ⓒ2023 McGraw HIII LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility (

Q: Supply the term that describes each of the following changes of physical state. (a) gas to liquid…

A: There are three physical state of matter; solid, liquid and gas.

Q: 7) Which of the following best describes the geometry about the C-C double bond in the molecule…

A:

Q: A substance has a definite shape and definite volume. What is the state of the substance?(a) solid…

A: The substance also called matter having fixed shape and fixed volume?

Q: Solve the following problems using either Avogadro's or Gay-Lussac's Law. Be sure to include unit…

A:

Q: Which substances conduct electricity?

A: The conductance of electricity in a substance is a measure of how easily the flow of electricity…

Q: Choose the state of water in which the water molecules are farthest apart on average. Group of…

A: The various forms in which matter can exist are usually known as states of matter. The main states…

Q: 3. A gas sample has a pressure of 583 mmHg and a volume of 3.75 L. If it is compressed to 1.05 L,…

A: (3) According to Boyle's Law: P1V1=P2V2 where, P1 = Initial Pressure = 583 mmHg V1 = Initial Volume…

Q: 8. An example of a homogeneous mixture is a) b) chicken noodle soup powerade the helium inside a…

A: A homogeneous mixture has a uniform composition and appears visually the same throughout. Any…

Q: 2. An example of a liquid in solid solution is a. water in air b. zinc in copPper C. mercury in…

A: An example of a liquid in solid solution has to be chosen.

Q: magnesium + oxygen → magnesium oxide List two physical / chemical properties for each compound

A: Physical properties are properties of substance that can be determined without changing substance's…

Q: How many major plates does the Earth have?

A:

Q: 1. Why are liquids more dense than gases? and Why are liquids harder to compress than gases?

A: The key factor in deciding the compressibility of both the mentioned physical state of matter is the…

Q: 3 The gas you used in this experiment was a mixture rather than a pure substance. Explain why this…

A: The gas (air) you used in this experiment was a mixture rather than a pure substance.

Q: can the following convension performed? Provide the methods acome with the support of mechanism. อ Ⓒ…

A:

Q: Mark the correct statements. (Select all that apply.) O [The reaction 2H20(g) → 2H2(g) + O2(g) is…

A:

Q: A chemical change

A: Chemical changes occurs when a substance reacts with another substance which results in the…

Q: The term for a solution that is a good conductor of electricity is "aqueous solution." True False

A: To solve this problem we have to know about aqueous solution.

Q: Given the Lewis structure below: нн ң н о

A: Organic molecules are molecules that contain carbon and hydrogen atoms. We have been given Lewis…

Q: gases If the moled sample is at the lowest temperature? Xe Cl2 O Ne Ar O The temperature is the same…

A: Applying concept of average velocity v = √8RT/πM

Q: Describe the energy changes that accompany changes of state

A: Transferring energy to or from a substance can change its state.

Q: Predict which solid will conduct electricitybetter—sugar or salt.

A: Electricity is nothing but the flow of charge. Since ions are charged species produced either by…

Q: Match the following terms with appropriate definition

A: In order to match the options with the correct categories, we have to know the definitions and the…

Q: If the light gas was Ne, what would be a reasonable identity for the heavy gas?

A: Light gas refers to a gas with a relatively low molecular weight and density, such as neon…

Q: Which one below represents a chemical change?

A: The question is based on the concept of general chemistry. there are basically two types of change…

Q: A blue crystal is added to an alcohol solution, but does not dissolve in the alcohol. How would you…

A: It is known that like dissolves like, meaning that substances with similar chemical characteristics…

Q: Problem 6. B-Endosulfan is an organic insecticide commonly used on vegetables and ornamental…

A:

Q: If thermal energy is added to solid, the following changes occurs

A: Thermal energy is the energy possessed within the system or in the object because to the movement of…

Q: What happens to ice when sugar and ice are added, respectively?

A: Here we will apply the colligative properties of solute in a solvent.

Q: Describe the processing of titanium dioxide nanoparticles include reference

A: Answer - Titanium dioxide nanoparticles, also called ultrafine titanium dioxide or nanocrystalline…

Q: When a substance is turning from a solid into a liquid, there is no rise in temperature. All the…

A: A solid melts into a liquid at the constant temperature. That is, the temperature remains constant.…

Q: The following substances dissolve when added to water. Classify the substances according to the…

A: The forces which happen between atoms (attraction or repulsion) between the atoms or the surrounding…

Q: 21. Water goes through a chemical change when it evaporates into a gas.   Group of answer choices…

A: Types of changes in nature: Chemical change: During this type of change the chemical nature,…

Q: 2. Write formulas for polyatomic ions: a. Sodium sulfate b. Calcium Carbonate 9. Write the Follow a.…

A: Polyatomic ions are ions which contains two or more than two atoms in ion.

Q: give a particulate-level explanation of why ice (solid water) is less dense than liquid water?

A: Density of ice     = 0.9168 g/cm3 Density of water = 1.00g/cm3 Density gives the measure of how…

Q: Which state has more Kinetic energy?a) Liquid Water b) Solid water c) Water vapor

A: The kinetic energy is energy possessed by an object due to its virtue of motion.

Q: 8a. What is the hybridization state of the carbon (1) atom in the following compound? C=N H. H. A.…

A:

Q: Gases and liquids share the property of A) definite volume B incompressibility (c) indefinite shape…

A: Properties of liquid:  (1):They are less rigid.  (2):They do not have fixed shape(indefinite shape).…

Q: Which is a property of a nonmetal? A. Poor conductor of electricity B. Solid at room temperature C.…

A: We know that a nonmetal is Poor conductor of electricity

Q: [References) lethane gas is compressed from 27 L to 2.5 L at a constant temperature. The final…

A: Given:  Initial volume, V1 = 27 L  Final volume, V2 = 2.5 L  Initial pressure, P1 = ?  Final…

Q: A patient result is greater than the linearity of the instrument. An off-line dilution needs to be…

A: Volume of patient sample = 100 micro Lit. Volume require for instrument = Sample + dead space   =…

Q: Section 4 part B

A: Chloromethane (CH3Cl) is a polar molecule.

Q: The physical state in which matter is not hard to compress is: A) solid B) liquid C) gas D) both…

A: There are three main physical states of matter  - solid , liquid and gas.  (1) Solid state has…

Q: A volatile liquid is one that ____________   Choose either - melts, freezes, evaporates   quickly…

A: Volatility :-  The characteristic property of any substance to get vaporize is defined as volatility…

Q: Molecules of Caco, 100 g/mol Atoms of Ca Atoms of C Atoms of 0 Total atoms

A: Moles of sugar to be dissolved in 1 liter of water = 1.25 mol Molecular mass of sugar = 6(12) +…

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.