Cao(o) +H,0(0) Ca(OH(o) ΔΗ -65.2 kJ/mol The heat released by this reaction is sufficient to ignite...
Homework Thermochemistry Name: 1. Calculate the mass of O that is produced by photosynthesis when 2.49 x 109 kJ of solar energy is consumed by the following reaction: 6 H20 (1) + 6 CO2 (g) - C&H 20(s) + 6 02 (g) ; AH-2803 kJ 2. Given the following thermochemical equation, what amount of energy is absorbed/given off when 255 g of CuO is reacted. 2 Cu20 (s) - 4 Cu (s) + O2(g) : AH = 333.8 kJ 3....
Calcium oxide and water react in an exothermic reaction: CaO(s) + H2O(l) >>>>>>>> Ca(OH)2(s) Heat of reaction (Rxn) = -64.8 kJ/mol How much heat would be liberated when 7.15 g CaO(s) is dropped into a beaker containing 152 g H2O. A. 1.97 x 10 to the third kJ B. 508 kJ C. 8.26 KJ D. 547 KJ E. 555 kJ
How much heat is released if 7.15 g Cao(s) is added to 152 g of H2O(l)?! Cao(s) + H2O) - Ca(OH)2(s) AHxn = -64.8 kJ/mol Select one: a. 7.68 kJ O b.8.26 kJ O c. 508 kJ d. 547 kJ O e. 555 kJ
How much heat is released if 7.15 g Cao is added to excess H2O? CaO + H2O + Ca(OH)2 AH = – 64 .8 kJ/mol
for 12. Using the reaction enthalpy data shown, determine the amount of heat released in each situation: 2 Ca(s) + O2(g) → 2 Cao (s) AH = -1,269.8 kJ a. if calcium reacts with 3 moles of O b. if 8 moles of calcium reacts with O2 c. if calcium and oxygen react to form 1 mole of Cao 13. Butane, CHao, is the fuel used in many hand-held lighters (see Figure 8.16). Based on the reaction enthalpy below, how...
Question 4 of 4 > The enthalpy changes, AH, for three reactions are given. H, ()0,()H,O) Ca(s) +2H (aq) Ca2 (aq) +H,(g) CaO(s) +2H (aq) - AH=-286 kJ/mol AH= -544 kJ/mol Ca2 (aq) +H,O() AH =-193 kJ/mol Using Hess's law, calculate the heat of formation for CaO(s) using the reaction shown. 0,()Ca) Ca(s) + kJ/mol ΔΗ- TOOLS During an experiment, a student adds 1.81 g CaO to 300.0 mL of 1.000 M HCI. The student observès a temperature increase of...
How much heat is released if 715 g Cao(s) is added to 152 g of H2O()? CAO(s) + H2O() - Ca(OH)2(s) AH an - -64.8 kJ/moll 0 768 kJ 0 8.26 0 0 508 ku 0 547) 0 555)
Consider the following reaction: Ca(s) + 2 H_2O(l) rightarrow Ca(OH)_2(s) + H_2(g) Calculate the heat of reaction based on the following information: 2H_2(g) + O_2(g) rightarrow 2 H_2O(l) DeltaH = -572 kJ/mol CaO(s) + H_2O(l) rightarrow Ca(OH)_2(s) DeltaH = -64 kJ/mol CaCO_3(s) rightarrow CaO(s) + CO_2(g) DeltaH = +178.1 kJ/mol 2 Ca (s) + O_2(g) rightarrow 2 CaO(s) DeltaH = -1270 kJ/mol 13. Acetylene is used in blow torches, and bums according to the following equation: 2 C_2H_2(g) + 5...
How much heat will be released (∆H) if 0.4501 mol of NH₃ are mixed with 0.20 mol of O₂ in the following chemical reaction? 4 NH₃ (g) + O₂ (g) → 2 N₂H₄ (g) + 2 H₂O (g) ∆H° = -286 kJ/mol
need help to solve it. thx! Write you answers on separate paper. Show your work for full credit. Include the version by your name. Given the following data Ca(s)+2C(graphite) → Cac, (s) AH = -62.8 kJ Ca(s)+10,(g)>CaO(s) AH; = -634.9 kJ Cao(s)+H,0(1) + Ca(OH), (aq) AH; = -653.1 kJ C,H,(g)+{0,(8) ► 200,(g)+H,0(1) AH; =-1300.2 kJ C(graphite) +0,(g) → CO2(g) AH; = -393.5 kJ calculate AH for the reaction Cac (s)+2H,0(1) Ca(OH), (aq)+C,H,(8) Using standard enthalpies of formation along with the...