Which portion of this heating curve for water should have the least steep slope?

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: To calculate the total energy required to convert a solid to gas using heat capacity, heat of…

A: Mass of water = 81.5 g Boiling point of water = 1000C ∆Hvap = 40.7 kJ/mol

Q: The occurrence of the same substance in more than one crystalline form is known as........

A:

Q: What are the molecular properties of Crystalline and Amorphous?

A: In Crystalline solid, components/atoms are arranged in regular pattern held by uniform…

Q: How much heat is needed to boil 785 g of water that is at 17.6 ºC?

A: To find out the total heat required for boiling the 785g water at 17.6-degree centi.... following…

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: Whare are interatomic forces

A: Interatomic forces has to be defined.

Q: What are Crystalline solids?

A: On basis of state of matter, it is classified into solids, liquids, gases, and plasma. In a solid,…

Q: What is evaporation? Condensation?

A: When a liquid is heated some of its molecules get enough energy to overcome intermolecular forces…

Q: The energy needed to boil the water comes from where?

A: Water exists into three phases. These are ice, liquid water and vapors. To change one phase into…

Q: Why is water commonly used in cooling systems?

A: Cooling system absorb heat from hot objects . It involve transfer of thermal energy from hot object…

Q: What is super cooled liquid? Give example

A: The process of chilling a liquid below its freezing point without allowing it to become solid is…

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: What is plasma state and super cooled state of atoms?

A: Plasma state of atoms:Atoms in plasma state are similar to gas, but the particles have a different…

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: Evaporation cools the liquid that is left behind because the molecules that leave the liquid during…

A: evaporation cool the liquid that is left Behind during evaporation because the molecule which have…

Q: How much heat is required to change 10grams of ice at -10 degrees Celcius to Water at 20 degrees…

A:

Q: What is the relationship between elevation and boiling point of a liquid ?

A: Boiling point of a liquid is the temperature at which the liquid start boiling and at this…

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: How many joules of heat energy are needed to completely change 29.0 g of water to steam at the…

A: The given data contains, mass of water = 29 g.

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: Heat is added to boiling water. Explain why the temperature of the boiling water does not change.…

A: Matter exists in different states. Water can exist in solid ice, liquid water and water vapors.…

Q: Water can absorb or release large amounts of heat with little change in actual temperature. Why?

A: The specific heat of a substance is the amount of heat needed to raise or lower 1g of the substance…

Q: How much heat is needed to melt 3kg of ice?

A:

Q: , a solid can coexist with its liquid and vapor phase

A: The temperature at which the vapor pressure of the liquid becomes equal to the external pressure is…

Q: Using the image below, what phase change would occur moving from region C to region A? Moving from…

A:

Q: Why could the rate of heating influence the melting point?

A: Generally, the heating influence the melting point becasue when it was colder then it usually take…

Q: Decide which element probly has a boiling point most and least similar to the boiling point of…

A: Aluminum boiling point = 2470°c Argon boiling point = -- 185.8°c Indium boiling point = 2072°c

Q: Phase changes are transitions between solid, liquid, and gas phases. For example, ice melting is an…

A:

Q: Make a descriptive introduction about heating curve of water.

A: A heating curve graphically addresses the stage advances that a substance goes through as hotness is…

Q: Examine the heating curve for water? Explain the significance of the slopes of each of the three…

A: The heating curve for water can be represented as follows

Q: (a) What phase change is represented by the “heat of fusion”of a substance? (b) Is the heat of…

A: a) Since fusion is the process where solid is converted into the liquid  hence the phase change…

Q: Which one is the different properties of water?  A. transports, lubricates, cushions, and excretes…

A: All known compounds can be dissolve in certain solvents whereas they remain insoluble in other…

Q: How much heat is needed to melt 10.0 grams of ice at -10°C until it is water at 10°C?

A: Given, mass of ice = 10.0 g Initial temperature (Ti) = -10°C Final temperature (Tf) = 10°C Amount of…

Q: Calculate the energy to raise temperature of melted ice.

A: The amount of heat required to increase the temperature of one kilo gram of a substance by one…

Q: Is energy (or heat) absorbed or released when vaporizing 50.0 g of water?

A:

Q: What Are the Properties of Water?

A: The chemical formula of water is H2O. In the structure of water, hydrogen atoms are bonded to oxygen…

Q: How much heat energy is needed to melt 750.0 grams of ice. it needs to be in kj

A: We have to calculate how much heat  energy  is needed to melt 750 grams of ice.

Q: Which statement below would be accurate about boiling water?

A: In boiling liquid state of water convert into gaseous state . In liquid state there is greater…

Q: Calculate the heat change in joules for melting 12.0 g of ice at 0 ∘C

A:

Q: How much heat is needed to melt 4.0 g of ice?

A: Asumming the ice is at 0°CThe latent heat of fusion if ice = 334 J/gMass of ice = 4g

Q: 3. How much energy would be needed to vaporize 2.8 g of water?

A: nwater = mass/ molar mass = 2.8/18 = 0.155 mol

Q: What phase occurs when molten aluminum poured into a mold cools to form a solid object?

A: Mixing is relatively easy in the liquid state but slow and difficult in the solid-state. By melting…

Q: What happens to the viscosity of liquid with the increase in temperature

A: Viscosity is a measure of a fluids  resistance to flow. It can express the internal friction of a…

Q: what is the process of liquid into solid

A: Process of liquid into solid. These are states of matter. Matter may be liquid or solid or gas…

Q: Explain what happens in the processes of vaporization and condensation?

A: To find: The explanation for the process of vaporization and condensation

Q: heats of fusion and heats of vaporization?

A: Option A is correct.