onsider the table. Metal Tm (K) ΔHfus (kJ/mol) Tb (K) ΔHvap (kJ/mol) Li 454 2.99 1615 134.7 Na 371 2.60 1156 89.6 K 336 2.33 1033 77.1 Rb 312 2.34 956 69 Cs 302 2.10 942 66 Using the data, calculate Δ?fus and Δ?vap for Cs.

Q: whats the chemical equation defined as ∆Hof for H2O (l)

A: Formation reactions are the chemical reactions that form one mole of a substance from its…

Q: Consider the following thermochemical data to: 2CO2(g) → 2 C (s, graphite) + 2 O2 (g) H2 (g) +…

A: Given  Equation No Reaction.                       ∆H°(kJ/mol) A 2CO2 (g) → 2 C (s, graphite)…

Q: You are studying the decomposition of CaCO3(s). CaCo3(s) → Cao(s) + CO2(g) At what temperature does…

A: The reaction given is

Q: Calculate the standard enthalpy of the reaction for the process 3RO(g) → R20(g) + RO2(g) using the…

A:

Q: The heat capacity of platinum (Pt, 195.1 g mol-1), is 26.0 J mol-1 K-1. Calculate the energy needed…

A: Q = n S ∆T  where  m = mass of the given metal = 66.6 g  n = W/M = 66.6 g/ 195.1 g/mol = 0.341 mol…

Q: Calculate the change in enthalpy (in kJ/mol) for the following reaction using the data provided.…

A:

Q: 9.45 mol of a monoatomic perfect gas with an initial volume of 10.33 L and temperature of 204 K…

A: 1) Constant external pressure so, P1 = P2 = 1.35 atm Number of monoatomic gas, n = 9.45 mol Initial…

Q: How much energy (at constant temperature and pressure) must be supplied as heat to 10.0 g of…

A: Using the enthalpy of individual reactions, amount of energy supplied can be found out.

Q: hat is ΔHof of Al2S3(s)?   2Al2S3(s) + 9O2(g) → 2Al2O3(s) + 6SO2(g)     ΔHo = -3684.2 kJ   ΔHof…

A: The reaction : 2Al2S3(s) + 9O2(g) → 2Al2O3(s) + 6SO2(g)     ΔHo = -3684.2 kJ ΔHof  Al2O3(s) =…

Q: reaction. Use the Standard Enthalpies of Formation in your textbook to determine the AH° for the…

A: From the standard enthalpy of formation data  ∆Hf for CO2 is -393.51 kJ  ∆Hf for NaCl is -407.25 kJ…

Q: Given the following two thermochemical equations: 2 NH3(g) → N2(g) + 3 H2(g) ΔH° = +92 kJ N2(g) + 4…

A: Heat consumed or liberated at constant pressure is termed enthalpy change ∆H. When any reaction is…

Q: What is the quantity of heat evolved at constant pressure when 30.5 g H2O(l) is formed from the…

A:

Q: Determine the heat of formation for PbS 2 PbS (s) + 3 O₂ (g) → 2 SO₂ (g) + 2 PbO (s) ∆H° = -828.4…

A: Given:

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: Calculate ΔH for the reaction 4 NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (l)

A: ∆H = ∆H1 + ∆H2 + ∆H3 Target equation:-   4 NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (l) ∆H = ?

Q: The formation of NaCl(s) is an exothermic reaction: Na(s) + 1/2Cl2(g) = NaCl(s) Delta H = -411…

A: The enthalpy of sublimation is calculated as shown below.

Q: Which of the following processes is endothermic, given the following: S(s) + O2(g) →SO2(g) ΔH = –299…

A: If the forward reaction is exothermic(energy us being evolved) , whereas the reverse reaction is…

Q: 4. Use Hess's law to calculate the enthalpy of formation of C₂H6 (g) given the following data. AH…

A:

Q: Which of the following processes is endothermic?   K+(g) + I-(g) → KI(s) 2Br(g) → Br2(g) 2Na(s) +…

A: Endothermic process is that process in which energy is absorbed.

Q: Using the following data, calculate the standard heat of formation of ICl(g) in kJ/mol:

A: Interpretation: To determine the standard heat of formation of ICl (g)

Q: Substance CO(g) O₂(g) CO₂(g) c. d. 1.22 x 1045 8.23 x 10-46 e. 7.48 x 1068 AHfᵒ (kJ/mol) ? 0 -393.5…

A: Given reaction: CO(g) + 12O2(g) ⇌ CO2(g) We have to calculate the value of K for the production of…

Q: Using the following thermochemical data, calculate Δ H f° of Ga 2O 3( s). 2GaCl3(s) + 3H2O(l) →…

A: Given 2GaCl3(s) + 3H2O(l) → Ga2O3(s) + 6HCl(g) ΔH° = 263.9 kJ/mol 2Ga(s) + 3Cl2(g) → 2GaCl3(s)…

Q: Consider the table. Metal Tm (K) AĦfus (kJ/mol) |Tp (K) AH vap (kJ/mol) Li 454 2.99 1615 134.7 Na…

A: Given information,

Q: Use standard enthalpies of formation to determine ΔHºrxn  (kJ) for : 2SO2 (g) + O2 (g) -> 2SO3…

A: The standard enthalpy change of a reaction is calculated by subtracting the enthalpy of formation of…

Q: -393.5 kJ mol AH°rxn = -285.8 kJ mol AH°rxn = - 3119.6 kJ mol" AH°rxn C(graphite) + O:(g)→CO2(g)…

A:

Q: Use the values of ∆Hfº in Appendix 4 to calculate ∆Hº for the following reactions.

A: ∆H0 = ∆H0product - ∆H0reactant

Q: 7. An old "trick" for cooling down a hot beverage quickly is to immerse a cold spoon into the…

A: Since the hot coffee is at a higher temperature, it releases heat and the silver spoon accepts heat…

Q: Using the following thermochemical data:   2Sb(s) + 6HF(g) → 2SbF3(s) + 3H2(g)           ΔH° =…

A:

Q: Calculate ΔrH∘ (The standard enthalpy of formation of liquid ethanol is −277.6 kJmol−1, of gaseous…

A: Balance Chemical Equation : C2H5OH(l) + 3O2(g)→2CO2(g) + 3H2O(g) Calculate standard enthalpy of…

Q: Consider the following thermochemical data: Cl2(g) → 2Cl(g) ΔH° = 242.3 kJ I2(g) → 2l(g) ΔH° =…

A:

Q: Consider the following thermochemical equations: C (diamond) + O2 (g) --> CO2 (g) ΔH° = –395.4 kJ 2…

A:

Q: Consider the table. Metal Tm (K) ΔHfus (kJ/mol) Tb (K) ΔHvap (kJ/mol) Li 454 2.99 1615…

A: Given data for Cs: Tm is 302K ∆Hfus is 2.10 kJ/mol Tb is 942K ∆Hvap is 66kJ/mol To find: ∆Sfus and…

Q: The heat capacity of silicon dioxide (SiO2, 60.1 g mol-1), is 0.732 J g¬ K-1. Calculate the energy…

A: The heat capacity of SiO2 is = 0.732 J g-1 K-1 The molar mass of SiO2 is =60.1 g.mol-1 The moles of…

Q: Consider

A: New Reaction equation is : 3A + 3/2B ------> 3C  Then, it's energy also multiple by 3/2 fector…

Q: Determine AH° for the reaction CS2(1) + 3C12 (g)→CCL (1) + S2Cl2 (1). Use appropriate data from the…

A: Given that : The ∆H for various reactions are given below : CS2(l)  +  3O2(g)  →  CO2(g)  +  2SO2(g)…

Q: Your roommate is having trouble understanding why solids form. He asks, “Why would atoms bond into…

A: Solid are the basic state of matter and having low intermolecular spaces and high intermolecular…