When diamond oxidizes (burns), heat is released: C(s) diamond O2(g) - CO, (a): AH = 395.4...
Coal burns in oxygen exothermically as shown below: C(s) + O2(g) → CO2 (g) AH = -393.5 kJ What amount of heat will be released when 100.0 g of it is burned? Molar mass of C = 12.01/mol -3935 kJ -0.3930 kJ -3276 kJ -4726 kJ
4 Fe(s) + 3 O2(g) → 2 Fe2O3(s) AH = -1652 kJ (a) How much heat is released when 3.54 mol iron are reacted with excess O2? Ok] (b) How much heat is released when 1.48 mol Fe2O3 is produced? CJ) (c) How much heat is released when 2.50 g iron are reacted with excess O2? DJ (d) How much heat is released when 12.6 g Fe and 1.02 g O2 are reacted? CkJ
c. How much heat is released when iting reacts to 4.59 grams of oxygen? AS da la reacción: 4 Al(s) + 3 O2(g) → 2 Al2O3 (5) AH = 3.35 kJ/mol ¿Cuánto calor se libera cuando reaccionan 4.567g de oxigeno? (8 pts)
Gasoline (octane) burns according the following equation. 2 C3H18 (1) + 25 O2 (g) 16 CO2 (g) +18 H20 (1) AH°= - 10,943 kJ How much heat is released when 10 g of octane is burned? (The molar mass of C = 12.0 g/mol, the molar mass of H = 1.0 g/mol). 960 kJ 62,400 kJ 480 kJ 1920 kJ
Gasoline (octane) burns according the following equation. 2 C3H18 (1) + 25 O2 (g) 16 CO2 (g) +18 H20 (1) AH°= – 10,943 kJ How much heat is released when 10 g of octane is burned? (The molar mass of C = 12.0 g/mol, the molar mass of H = 1.0 g/mol). O 1920 kJ O 960 kJ 480 kJ 62,400 kJ
Consider the following reaction: C(s, diamond) + O2(g) - CO2(g) substance AHF (kJ/mol) C(s, diamond) 2.0 CO2(g) -393.5 H20(1) -286.0 02(9) 0.0 How much heat is evolved when 1.201x101 g of C(s, diamond) is burned in excess oxygen. Answer to 4 sig figs. Assume standard conditions. Note that, by convention, a decrease in enthalpy of the system will result in a positive quantity of heat being evolved. Submit Answer Incorrect. Tries 7/99 Previous Tries How much heat is evolved when...
Enter your answer in the provided box. Diamond and graphite are two crystalline forms of carbon. At 1 atm and 25°C, diamond changes to graphite so slowly that the enthalpy change of the process must be obtained indirectly. Determine A Hrxn for C(diamond) — Сgraphite) with equations from the following list: (1) C(diamond) + O2(g) + CO2(g) (2) 2 CO2(g) → 2 CO(g) + O2(8) (3) C(graphite) + O2(g) → CO2(g) (4) 2 CO(g) → C(graphite) + CO2(g) AH=-395.4 kJ...
Consider the reaction B2H6(g)+O2(g)=B2O3(s)+3H2O(g) delta heat -2035 kJ/mol calculate the amount of heat released when 24.8g of diaborane is burned heat released=
Methanol (CH3OH) burns according to the equation 2CH3OH(l) + 3O2(g) → 2CO2(g) + 4H2O(l), ΔH°rxn = –1454 kJ/mol. A) How much heat, in kilojoules, is given off when 150.0 g of methanol is burned? [ Select ] B) How many grams of CO2 are produced when the amount of heat determined in part A is released? [ Select ] Molar masses: CH3OH = 32.04 g/mol O2 = 32.00 g/mol CO2 = 44.01 g/mol H2O = 18.02 g/mol
. For the reaction C(s)+O2(g) CO2(g), AH = -393.5 kJ/mol. What is the amount of heat (in kJ) produced during the combustion of 34.56 g of coal (pure carbon)? pec To abiod to yedmun Decide whether each of these reactinns is exothorm