Why does water expand when it freezes?

Q: 3. What are the intermolecular forces of attraction that hold the water molecules together? Explain…

A: The chemical formula of water is H2O. Intermolecular forces are the attractive forces that hold the…

Q: Calculate the heat released when freezing 25.0 g of water at 0 °C.

A: When water freezes it gives up some of the water's energy. The energy that is given up is the latent…

Q: Explain the vapor pressure ?

A: When we heat a liquid it form vapour . When container is closed vapours strike to the walls of…

Q: In which form of water are the water molecules farthest apart?

A: In gaseous form water molecules are farthest apart

Q: Explain the Liquefaction of Gases ?

A: Liquefaction of gases is referred to as the conversion of a gas into a liquid state. Simple…

Q: 1.With what kinds of substances does water chemically react?

A: Water reactive chemicals are those chemicals which react vigorously with the moisture. The most…

Q: Explain why water will evaporate even at cold temperatures if left in an open container.

A: The conversion of a substance from its liquid phase to vapor phase below its boiling point is known…

Q: What kinds of substances does water chemically react?

A: Given statement is : What kinds of substances does water chemically react = ?

Q: Why water expand in the form of ice?

A: As we know water is generally present in the liquid form. But it also exist in steam form at higher…

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: How do the properties of water differ from those of most other substances?

A: Water exists in solid (s), liquid (l) as well as gaseous (g) state. It has many unusual properties…

Q: How much energy is released when 2.55kg of diethyl ether freezes?

A: We have to find the amount of energy released when 2.55kg of diethyl ether freezes.

Q: Which atom in water points toward Na + in the ion-dipole interaction? Why?

A: The atom which is  points toward Na + in the ion-dipole interaction with a reason has to be given,

Q: What is the vapor pressure of liquid water at 100 oC?

A: At 100 oC , the vapor pressure of water is 1 atm (atmosphere). The various ways 1atm is expressed in…

Q: What are the properties of water and how do they relate to its structure and intermolecular forces?

A: Study of shape and polarity of bond we can relate the unique  properties of water.

Q: Explain the properties of water with its molecular structure and intermolecular forces

A: Properties of water:- It possesses a regular crystalline structure based on the molecular structure…

Q: (a) When you exercise vigorously, you sweat. How does thishelp your body cool? (b) A flask of water…

A: Sweat helps cool you down by releasing moisture onto your skin. But that's not all that's going on.…

Q: For what types of substances is water a good solvent? For what types is it a poor solvent? Explain

A: Solute whose intermolecular attraction to solvent molecule is less than attraction of two solvent…

Q: How do phase changes of water entail the exchange of energy? (In other words, explain latent heat.)

A: Phase changes of water are accompanied by the exchange of latent heat. Even as heat is added or…

Q: Which intermolecular forces do the particles in the image (Br– in water) experience? Note that the…

A: In atom electrons revolve around nucleus which contains protons and neutrons. In atoms dipole is not…

Q: 4. Water is less dense as a solid than as a liquid. A. Why can solid ice float on liquid water? B.…

A: Answer A- When water freezes into its stable form, the molecules can form extra strong hydrogen…

Q: What is vapor pressure lowering?

A: The addition of a nonvolatile solute will leads to the lowering of vapor pressure. The reason is…

Q: How do hydrogen bonds form between adjacent water molecules?

A: In water, hydrogen bonds form between neighbouring hydrogen atoms and oxygen atoms of nearby water…

Q: Why are honey and maple syrup much more viscous than water?

A:

Q: If the temperature of a liquid is increased, what is the efffect on the vapor pressure?

A: The relationship between the temperature and vapour pressure is given by  where P = vapour pressure…

Q: What happens to the temperature while there is still ice in the water? Why?

A:

Q: What is the vapor pressure of water if the total vapor pressure is 1.5 atm and the pressure of…

A: Total vapor pressure Pvap = 1.5 atm Pressure of oxygen is Po2 = 0.2 atm Dalton's Law of Partial…

Q: Why does water resist changes in temperature?

A: Properties of water: It is known that water is polar in nature because there is a partial positive…

Q: You place water on a freezer, and it solidify over a period of time, water is in solid form, why?

A: Temperature plays a very important ole in phase change. The main cause for different phases is…

Q: What is needed for a liquid to freeze?

A: Matter is anything that has mass and volume, which exist in material word. Three types of matter are…

Q: 200 grams of MgCl2 are added to 1 L of liquid water at standard conditions. a) Calculate the…

A: eople who live in colder climates have seen the trucks put salt on the roads when snow or ice is…

Q: Oil and water? What force is primarily responsible for the fact that oil and water do not mix…

A: Water is a transparent, tasteless, odorless, and colorless liquid. In water, there are two atoms of…

Q: Based on the phase diagram for water, explain how it is possible to skate on ice, that is, solid…

A: Phase diagrams: The different phases of a system can be represented in a diagram called a phase…

Q: What is a hydrogen bond between water molecules?

A: A hydrogen bond between water molecules has to be given.

Q: What phase occurs when a scoop of ice cream begins to drip in the hot sun?

A: Matter is the substance that occupied space and has mass. Solid, liquid and gas are three main…

Q: 4. How much energy is released with 17g of water is frozen?

A:

Q: What major type of attractive interaction must be overcome for water to evaporate? dipole-dipole…

A: Intermolecular forces are the forces which mediate interaction between molecule including forces of…

Q: How much energy is released when 65.8 g of water freezes?

A: At constant temperature when 1 kilogram of a solid is converted into liquid then heat released is…

Q: Describe the two main factors leading to sea-level rise, and relate them to the phase changes of…

A: There are various factors responsible for the rise in the sea-water level.  Below are the two main…

Q: Why is solid carbon dioxide called dry ice? How does it differ from solid water in behavior?

A: regular ice that is solid water is made by simply freezing water at freezing point temperatures.…

Q: 4. What effect does the evaporation of water have on the object from which it is evaporating? When…

A: Evaporation is a process in which all the liquid molecules are converted into gaseous molecules.

Q: Why does sea water boil at a higher temperature than fresh water does?

A: The question deals with one of the colligative properties of the solution i.e. elevation in boiling…

Q: Oil molecules have higher vapor pressures than water.

A: Vapour pressure is the pressure exerted on liquids by the vapors present on its surface.

Q: What types of intermolecular forces exist between water and HF?

A:

Q: How much energy would need to be added to 930.g of ice at 0.0°C to turn it into liquid water at…

A:

Q: What happens to the boiling point of water at high altitude?

A: Boiling point- Boiling point is the temperature at which vapor pressure of liquid becomes equal to…

Q: The larger the surface area, the higher the boiling point. Define the above statement ?

A: Boiling point of a compound is directly proportional to the surface area.

Q: Why are the freezing and boiling points of water higher than would be expected for a compound of its…

A: Water is composed of two atoms of hydrogen and one atom of oxygen. Boiling point is the temperature…

Q: How much energy is released when 65.8g of water freezes

A: First convert the given grams to moles.

Q: at what pressure is the boiling point of water the same as its freezing point

A: