Calculate the heat absorbed when 35.39 g of some substance at 13.16°C is completely melted. The molar heat of fusion for the substacnce is 5.91kJ · mol, and the molar mass is 16.45g · mol Exnro

Q: The heat of vaporization AH, of methanol (CH;OH) is 35.3 kJ/mol. Calculate th

A: If   vapourisation of methanol       CH3OH(l)     ⇔  CH3OH(g)    △Hv = 35.3 KJ/mol     then…

Q: The molar heat capacity of ice is 37 J/mol*K and the molar heat capacity of liquid water is 76…

A:

Q: How many grams of benzene, C6⁢H6, can be melted with 88.8 kJ of heat energy? The molar heat of…

A: Using relation between enthaply of fusion and heat energy mass of benzene produce can be calculated.…

Q: 4. The specific heat capacity of silver is 0,235J/g⋅K. Its melting point is 962°C, and its heat of…

A:

Q: A substance with molar mass = 115.5 g/mol), has a boiling point of 103°C. Calculate how much energy…

A: A multiple choice question based on heat energy exchange, which is to be accomplished.

Q: Refer to this data table: Specific heat of: Molar heat of fusion of ice 6.01 kJ/mol. ice 2.03 J/g…

A: Given, Specific heat of Ice = 2.03 J/g°C Steam = 1.99 J/g°C Water = 4.184 J/g°C Molar heat of fusion…

Q: The molar heat of vaporization of ammonia is 23.3 kJ/mol. What is themolar heat of condensation of…

A: Molar heat of condensation is the amount the energy released when one mole of the gaseous phase of a…

Q: Two 20.0 g ice cubes at –10.0 °C are placed into 205 g of water at 25.0 °C. Assuming no energy is…

A: Suppose, final temperature of water is Tf °C Given that, heat capacity or H2O (s) of ice = 37.7 J…

Q: The specific heat capacity of silver is 0,235J/g-K. Its melting point is 962°C, and its heat of…

A: Since the silver is initially at 25 oC. Hence to melt the silver from solid to liquid state, first…

Q: From the data below, calculate the total heat (in J) needed to convert 25.00 g of ice at –8.00°C to…

A: Since we want to convert ice at -8 oC to liquid at 0.350 oC Hence the process will involve below…

Q: How much energy (in kJ) is required to heat 15.98 g of Ga(s) from 29.8 K (its melting point) to…

A:

Q: A 389.3 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C.…

A: Heat absorbed by substance to convert it from solid to liquid.

Q: Determine the normal boiling point of a liquid with vapor pressure 63.8 mmHg at 36.50 degrees  C ,…

A: Given Information -  P1 = 63.8 mmHg T1  = 36.50 + 273 K = 309.50 K P2  = 760 mmHg T2  = ?  ∆Hvap =…

Q: Suggest an explanation for the observation that the heat of fusion of a substance is always smaller…

A: The heat of fusion is the amount of heat required to convert the solid state of the substance into…

Q: How much heat energy is required to convert 35.8 g of liquid sulfur dioxide, SO2, at 207.5 K to…

A:

Q: 12. Patients with a high body temperature are often given "alcohol baths". The heat of vaporization…

A: Heat of vaporization means the heat required to covert a fixed amount of liquid to gas.

Q: The molar heats of fusion and sublimation of lead are 4.77 and 182.8 kJ/mol, respectively. Estimate…

A: UsIng the relation between molar heat of fusion , sublimation and vaporization we can find molar…

Q: How much heat is required to evaporate 100.0 g of liquid ammonia, NH3, at its boiling point if its…

A: Given: Mass of NH3  = 100.0 g ΔHvap = 4.8 kJ/mol

Q: What is the quantity of heat (in kJ) associated with cooling 150.3 g of water from 25.60°C to ice at…

A:

Q: If the melting point of ice changed to 3.0 °C, how would this affect the molar enthalpy of fusion…

A: Molar enthalpy of fusion is the energy required to change one mole of a substance from solid phase…

Q: 4. How much energy does it take to melt 10.0 g benzene? The heat of fusion of benzene is 2.37…

A:

Q: How much heat energy is required to melt 126.0 g of HBr? The molar heat of fusion of HBr is 2.41…

A: Given   mass of HBr = 126 gram  Molar Heat of Fusion    = 2.41 KJ/ mol  Energy required to melt 126…

Q: Consider the phase diagram of substance J below: 4500 J(s) 760 82 53 Pressure (torr) J(1) 0.1 12 93…

A:

Q: The heat of fusion of pure silicon is 43.4 kJ/mol. How much energy (kJ) would be needed to melt…

A: The amount of heat required to change 1 g of solid to liquid at the same temperature is known as…

Q: How much heat must be added to 23.9 g of solid white phosphorus, P4 , at 24.1°C to give the liquid…

A: Given- Mass = 23.9 g Initial temperature = 24.1°C Final temperature = 44.1°C Specific heat capacity…

Q: Consider the heating curve provided for 1.00 mole of a substance that begins as a solid at -14.8 °C…

A: Solution From the heating curve, it is clear that the substance is solid at   and the melting point…

Q: What does not correspond to the molar heat of fusion? O AHfus O the heat absorbed by one mole of a…

A:

Q: The heat of fusion of pure silicon is 43.5 kJ/mol. How much energy would be needed to melt a 5.24-g…

A: Mass of silicon= 5.24g MOLAR mass = 28g/mol Mole= mass÷molar mass=  5.24÷28= 0.18mole 1 mole Si…

Q: 34. The enthalpy of vaporization for N2(1) is 5.56 kJ/mol. How much heat (in J) is required to…

A: Number of moles can be calculated as shown below:

Q: If it requires 70.4 kJ of heat to boil 1.60 moles of water, what is its enthalpy of vaporization?

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: What does not correspond to the molar heat of fusion? O AHfus the heat absorbed by one mole of a…

A: The molar heat of fusion of a substance is the heat absorbed or released when 1 mole of the…

Q: A 417.3 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C.…

A: To solve this problem we will use the formula  q = m•c•∆T  Where, q = heat absorbed or released  m =…

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: Calculate the quantity of energy required to convert 72.8 g of H₂O(s) at 0.0 °C to H₂O(g) at 100.0…

A:

Q: The molar heats of fusion and sublimation of lead are 4.77 and 182.8 kJ/mol, respectively. Estimate…

A: Given Data: The heat of fusion is 4.77 kJ/mol. The heat of sublimation is 182.8 kJ/mol.

Q: lculate the amount of heat energy required to melt 25.0 g of ice at 0.0°C. (molar heat of fusion of…

A: Molar heat of fusion of ice = 6.01*10³ g/mol

Q: Which has the smallest enthalpy of fusion? Li2O H2O MgO HCl

A: The smallest enthalpy of fusion will be observed for those which has a weaker forces of attraction.…

Q: Explain why the enthalpies of vaporization of the following substances increase in the order CH4…

A: Enthalpy of vaporization depends on the strength of inter molecular forces. High inter molecular…

Q: A 389.7 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C.…

A: Mass of unknown sample = M= 389.7 gMolar Mass of Unknown Sample = 92.41 g/moleNo of moles of Unknown…

Q: Use the information provided to calculate the quantity of heat (in kJ) required to convert 59.22 g…

A:

Q: The heat of vaporization of water is 40.66 kJ/mol. How much heat is absorbed when 2.12 g of water…

A: ANSWER : Concept and reason :  We known that the relationship between specific heat of a substance…

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: The heat of combustion of bituminous coal is 2.50 x 104 1/g. What quantity of the coal is required…

A: The answer to the following question is-

Q: B. If 25.0 kJ of heat is lost by 0.500 mol of substance A initially at 110 °C, what is the final…

A: At 110oC the state of the substance is gas. The boiling point of the substance is 78oC. Hence when…

Q: What is the enthalpy (in J) required to melt a 4.77g block of Ice? H fusion= 6.00) kJ/mol

A: amount of energy needed for completion of reaction is known as enthalpy of reaction.

Q: A 27.1-g sample of ice, initially at 0.0oC, is completely converted into steam at 100.0oC. What is…

A:

Q: Calculate the heat released when 25.0 g of steam becomes liquid water at 100.0°C. The molar heat of…

A: Heat of vaporization: It is also known as enthalpy of vaporization, which is defined as heat…

Q: The following information is given for cobalt at 1atm: 3097°C AHvap = 6.60 kJ/g 263 J/g boiling…

A: Given the mass of liquid cobalt sample, m = 39.8 g  initial temperature of liquid cobalt, Ti = 1495…

Q: From the following vapor pressure data for ethanol, an estimate of the molar heat of vaporization of…

A: use clausius clapeyron equation to find the molar heat of vaporization of Ethanol  Let  Initial…

Q: From 25.0°C to 94.5°C, 75.1 grams of ethanol are heated. What was the energy requirement in joules?…

A: The mass of ethanol = 75.1 g T1: Initial Temperature (25.0oC) T2: Final Temperature (78.4oC)[Boiling…

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.