How much heat is released if 715 g Cao(s) is added to 152 g of H2O()?...
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
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 is added to excess H2O? CaO + H2O + Ca(OH)2 AH = – 64 .8 kJ/mol
5.20 When 2.00 g of CaO(s) is added to 49.0 g of water at 25.0°C, the temperature of the water increases to 32.3°C. Assuming that the specific heat capacity of the solution is 4.18 J/g:°C, calculate AHöxn (in kJ/mol Cao) for the following reaction: Cao(s) + H2O(1) + Ca(OH)2(aq) A n = ???
CHEMWORK Consider the reaction B2H6(g) +3 02(g) → B2O3(s) + 3 H2O(g) AH = -2035 kJ How much heat is released when a mixture of 8.26 g B2H7 and 8.80 g 02 is burned? heat released = kJ Submit Show Hints
Cao(o) +H,0(0) Ca(OH(o) ΔΗ -65.2 kJ/mol The heat released by this reaction is sufficient to ignite paper How much heat is released when 14.5 g of calcium oxide reacts? Enter your answer as a positive value. ΔΗ kJ
81. Given the following data Ca(s) + 2C(graphite) → CaC2(s) AH-62.8 kJ Ca(s) + cao(s) + H2O(l)-→ Ca(OH)2(aq) C2H2(g) +022CO2(8)+ H200) 2(g)-→ CaO(s) ΔH =-635.5 kJ ΔH =-653.1 kJ C(graphite) + 02(g)-→ CO2(g) ΔH =-393.5 kJ calculate ΔH for the reaction CaC2(s) + 2H20() → Ca(OH)2(aq) + C2H2(g)
Using the equations Ca (s)2 O (g) Сао (s) 2 H2 (g) Determine the enthalpy for the reaction Са (s) + 2 H0 () — Са(ОН)2 (s) + H2 (9). CaO (s) AH° = -635 kJ/mol -64 kJ/mol H2O ()Ca(OH)2 (s) AH O2 (g)2 H2O (I) AH° = -572 kJ/mol kJ/mol 1 2 3 4 6 C 5 7 8 9 +/- 0 x 100 LO 11.01 g of MgSO4 is placed into 100.0 mL of water. The water's temperature...
Energy 4. (3 points) How much heat is released when 150.0 g of copper cool down from 70.1°C to 22.3"C7 Specific hest capacity of copper is 0.385 g"C. 5. (3 points) During combustion of acetylene, CHą, according to the reaction below 1299 kJ are released: C Hz + 5/20, 200, + H2O AH = -1299 kJ How much energy is liberated when 100.0 of acetylene combust? 6.3 points) Given the following equations and AH values, determine the heat of reaction...
1. Determine: Ca(OH)2 (s) + H2SO4 (1) → CaSO4 (8) + 2 H20 (1) Given: CaO (s) + H2O (1) + Ca(OH)2 (s) CaO (s) + H2SO4 (1) + CaSO4 (s) +H2O (1) AH' = - 65.19 kJ AH = -271.67 kJ