5. Is the melting temperature of a substance different from its freezing temperature? Define the process of melting:

Q: The boiling point of ammonia, NH3, is - 33.4°C and that of sulfur dioxide, SO2, is - l0.0°C. Which…

A: Given: The boiling point of NH3 =  - 33.4 °C. The boiling point of SO2 = - l0.0 °C.

Q: at what particular condition that no more heat can that be removed from a substance and the…

A: We are to name the condition when no more heat can be removed from a substance. Or no more…

Q: Vhat specifically is happening at points B>C? What specifically is happening at points D→E? What…

A: Phase change is  a change from one state (solid or liquid or gas) to another without a change in…

Q: The following information is given for mercury at latm: boiling point = 357 °C AHvap(357 °C) = 59.3…

A: When a chemical reaction takes place, reactants are changed to products. As a result, the energy…

Q: List the Properties of Liquids?

A: Matters are the substances that are formed by combining very small particles. Matters are not able…

Q: DISCUSS THE FOLLOWING DIPOLE DIPOLE  FORCES,ION-DIPOLE FORCES, DISPERSION FORCES, THE HYDROGEN BOND

A: Since you have posted multiple questions, we are entitled to answer the first ony.

Q: 8. The temperature at which a solid melts is the same as the temperatur Physical properties are used…

A: Freezing point is the temperature at which a substance freezes. Melting point is the temperature at…

Q: What is the eff ect of addition of impurities on  freezing and boiling points of a substance?

A: Boiling point is temperature at which vapour pressure of liquid becomes equal to atmospheric…

Q: What is the melting point for iodine at 1 atm?

A: Standard pressure - The standard pressure of the iodine is given to be 1 atm. Melting point - The…

Q: What is crystallization ? Explain

A: Given      crystallization   We need to explain crystallization.

Q: 11.) A) Which would have a greater melting point, (a) or (b)? Explain. B) Which would have a greater…

A: The melting point is defined as the temperature which is required to melt solid substances. It…

Q: How many joules of heat are required to melt 4.5 g of copper at a temperature of 1083°C? Use the…

A:

Q: Find ΔHrxn, ΔSrxn, and ΔGrxn for this phase change CCl4 (l)    CCl4 (g)      and then,    what…

A: The reaction taking place is given as, => CCl4 (l) -------> CCl4 (g)

Q: The melting point of benzene is 5.5 ∘C and its boiling point is 80.1 ∘C. At what temperature will…

A: The boiling point can be described as the temperature of the substance at which vapour pressure of…

Q: Which statement is true? Statement 1: Sublimation refers to the phase transition in which matter…

A: Given statements are : Statement 1: Sublimation refers to the phase transition in which matter…

Q: 1. Explain how water's phase diagram differs from those of most substances. What property of water…

A:

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: 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: 4.What is the name of a phase change between a solid to a liquid?  a freezing  b evaporation  c…

A: melting  Option "d" is correct.

Q: The boiling point of acetic acid is usually stated to be 118°C. Is it possible to have acetic acid…

A: The liquid state of any substance is changed to its vapor state, when the atmospheric pressure…

Q: i) ii) Magnesium has Silicon has a very high melting tempé Sulphur has a higher melting temperature…

A: The question is based on periodic properties of the elements. We have to compare the melting point…

Q: that starts as a solid below its freezing point. 180 160 E D 140 120 C 100 80 B A 6 8 10 12 14 16 18…

A: The processes based on heating curve of molecule. initially solid is heated. then comes the melting…

Q: 7. How does the molar heat of vaporization of a substance compare to its molar heat of condensation?

A: Since you are posted with multiple question. As per the rule, I am answering the first question…

Q: How many joules of energy must be removed from 156 g of water at 17.3 °C to form ice at 0 °C?

A:

Q: 11.) Which of the following entropies are arrange in an increasing order? A. gas < solid < liquid C.…

A: As you have asked multiple type questions, we will solve only first  questions for you. If you want…

Q: Why does liquid water have higher Einternal than ice at the same temperature?

A: We would discuss the factors which affect internal energy.

Q: How many grams of benzene, C,H,, can be melted with 21.8 kJ of heat energy? The molar heat of fusion…

A: Given data: The heat energy (q)=21.8 kJ. The molar heat of fusion of benzene=9.95 kJ/mol. To find:…

Q: The melting point of dibromomethane is -53 °C and its ­boiling point is 97 °C. a) What is the state…

A: Answer the given questions from the given data. Given: The melting point of dibromomethane is -53 °C…

Q: How many grams of ice are needed to decrease the temperature of 50.0 mL of water by 5.0 degrees…

A: The solution is given below -

Q: How much energy is released when 10.0 g of water (H2O) at 50 °C is cooled, completely frozen, and…

A: The stepwise solution is as follows-

Q: In the phase diagram, which transition represents the condensation of a gas to a liquid? P A A to D…

A:

Q: How is the density of solid water compared to that of liquid water atypical among substances? Why is…

A: The three-dimensional structure of solid water avoids the molecules from getting too close to each…

Q: - At room temperature, F2 and Cl2 are gases, Br2 is a liquid, and I2 is solid. This is because of…

A: The intermolecular force between the atoms and molecules is known as London dispersion forces.

Q: Which has the lowest boiling point? AsH3, PH3, or NH3

A: Boiling Point of Nitrogen Family increases on moving down the group due to hydrogen bonding. It is a…

Q: 7. How many calories of energy are released to the surroundings when 275g of mercury freezes? The…

A:

Q: How many grams of benzene, C,H,, can be melted with 88.8 kJ of heat energy? The molar heat of fusion…

A: Given : Molar heat of fusion of benzene(∆Hfus ) = 9.95 kJ/mol  Heat energy(q) = 88.8 kJ   We have to…

Q: How many grams of benzene, C,H,, can be melted with 65.4 kJ of heat energy? The molar heat of fusion…

A:

Q: • At its boiling point (-61 C), what mass of H2S is vaporized with 100 kJ? The AHvap of H2S, is 18.8…

A: Given : Heat used = 100 KJ And ΔHvap = 18.8 KJ/mol

Q: 6. The heat of vaporization for methane (CH) is 9.2 kJ/mol. How many kJ of heat energy are required…

A: Concept is based on molar enthalpy.

Q: A certain liquid has a vapor pressure of 92:0 Torr at 23.0 °C and 309.0 Torr at 45.0 °C. Calculate…

A: Clausius-Clapeyron equation : ln (P2P1) = -∆HvapR(1T2-1T1) where ,  P1 is vapor pressure at…

Q: 5. Using a phase diagram, explain why the sublimation of ice is not possible at room temperature.

A:

Q: What is the effect of temperature on(i) density(ii) vapors pressure of a liquid?

A:

Q: Methane (CH4) has a normal boiling point of -161.6°C. At this temperature, the AHcondensation =…

A: Heat of vaporization or condensation is the amount of heat required to convert liquid to gas or…

Q: 1. Does the diagram best describe a crystalline solid, a liquid, or a gas? Explain.  2. In terms of…

A: Both a conventional fluid and a nematic fluid precious stone stage are liquids, however just in a…

Q: phase

A:

Q: In what phase is CO₂ at 72 atm and 0 °C? liquid gas solid Starting from the same point, 72 atm and 0…

A: The above provided diagram is the phase diagram of CO2 . From a phase diagram we can tell about the…

Q: 7. What happens to the average kinetic energy of the substance in Region II of the cooling curve?…

A: 1) we know kinetic energy is directly proportional to the temperature. In the given graph the region…

Q: Which statement about the vaporization of acetone, CH3COCH3, is INCORRECT? Select one: a. When…

A: Acetone does not show hydrogen bonding among the neighboring molecules. When acetone is vaporized,…

Q: 18. Which statement best describes boiling point elevation?

A: Some properties depend only on the number of dissolved particles in the solution and not on the…

Q: As a substance is subjected to pressure and/or temperature changes, it may undergo condensation,…

A:

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.