only worth 1 point. 1. (6) 15.0 g of ice cubes at 0.0°C are combined with...
Calculate ΔHrn for the following reaction 50(s) + 6H2(g) → C5H12(1) Use the following reactions and given AH's. C5H12(1) + 802 (g) → 5CO2(g) + 6H20(g), ΔH=-3244.8 kJ C(s) + O2(g) → CO2 (g), ΔH=-393.5 kJ 2H2 (g) + O2 (g) → 2H2O(g), ΔH=-483.5 kJ Express your answer to for significant figures kJ
Part A Calculate AHxn for the following reaction: 5 C(s) + 6 H (9) C: H12 (1) Use the following reactions and given AH values. C, H12(1) + 8 O2(g) →5 CO2(g) + 6 H, 0(9), AH = -3244.8 kJ C(s) + O2(g) → CO2 (9), AH = -393.5 kJ 2 H2(g) + O2(g) + 2 H2O(9), AH = -483.5 kJ Express your answer to four significant figures.
1. Calculate ΔHnn for the following reaction. 3NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g) Given. AHof (NO2(g)) = +33.2 klymol AHof (H20(1)) =-187.8 ki/mol AHof (HNO3(aq)) =-207.0 kJ/mol AHof (NO(g)) = +91.3 kJ/mol
. Use the equation below to calculate how much heat (in kJ) is evolved when 5.0 g of aluminium reacts with a stoichiometric amount of Fe2O3? 2 Al (s) + Fe2O3 (s) —>2 Fe (s) + Al2O3 (s) AH° = -852 kJ Determine the AHPrxn for the following reaction. {AH® (NH3) = -45.9 kJ/mol; AH°(O2) = 0; AH® (NO) = +91.3 kJ/mol; AH° (H2O) = -241.8 kJ/mol; 4 NH3 (g) + 5 O2 (g) — 4 NO (g) + 6...
14- Calculate AH-m for the following reaction: 4 NHs (g) 솨,e,s ? + 5 (g) → 4 NO (g) + 6 H2O (g) Given the following ΔΗ7 values: NHs (g)-45.9 kJ/mol NO (g) +91.3 kJ/mol H20 (g)-241.8 kJ/mol A) 1632 kJ B) 1632 kJ C) 1269 kJ D) 902 kJ E) Δ1p value for O2 is needed 15- Which electron configuration does not represent the Pauli exclusion A) B) s 2 C) 1s 2 2 D) 1s 2s E) 1s...
1. How much heat is required at constant pressure to melt 1 mole of ice at -25 C to steam at 125° C? boiling point 100c melting point 0.000'C specific heat capacities are gas(steam) 2.08, liquid 4.184 solid (ice) 2.11. All in units of JigC AH(100°C) 40.7 kJ/mol AHu (0.000°C)-6.01 kJ/mol 2. Calculate AHrxn for the reaction: CH4(g)4 Cl2(g) -CC4(g) 4 HCl (g) + Use the following reactions and given AH's: CH4(g) AH =-74.6 kJ 2 H2(g) C(s) C(s)2 Cl2(g)...
1. The heat capacity of a calorimeter is given as 1264 J/oC. Suppose the enthalpy of solution for calcium chloride (MM=111 g/mol) in water is given by the thermochemical equation: CaCl2(s) + H2O(l) → Ca2+(aq) + 2Cl-(aq) ΔH = -81.0 kJ/mol. Calculate the temperature change if 11.1 g of calcium chloride is dissolved in water in the calorimeter. 2. Given the following data, calculate ΔH for the reaction of two moles of carbon monoxide with oxygen gasto give carbon dioxide....
Practice Exercise 1 When 0.243 g of Mg metal is combined with enough HCl to make 100 mL of solution in a constant-pressure calorimeter, the following reaction occurs: Mg(s) + 2 HCl(aq) + MgCl(aq) + H (9) If the temperature of the solution increases from 23.0 to 34.1' C as a result of this reaction, calculate AH in kJ/mol Mg. Assume that the solution has a specific heat of 4.18 J/g-° C. (a) -19.1 kJ/mol (b)-111 kJ/mol (C) -191 kJ/mol...
Specific heat = 4.18 J/g*C MgO(s) + 2HCl(aq) → 2Cl(aq) + Mg(aq) + H2O(l): AH = A student added 0.250 g of MgO(s) to 45.0 mL HCI@ 22.0'C. The temp of the calorimeter rose to 23.5°C. What is qarin kJ? What is the AH in kJ/mol of Mgo for this reaction? Density HCI = 1.05 g/mL
Practice with Hess's Law and Standard Heats of Formation 1. (Example) The reaction C He(g) + 6 F2 (g) → 2 CF4(g) + 4 HF (9) can be written as the sum of: CH4 (9) ► 2 C(s) + 2 Ha(o) AH = -52.3 kJ/mol 2 C(s) + 4 Faq) → 2 CF4g) SH -1380 kJ/mol 2 Haq) + 2 Fala) > 4 HF HE.1074 kJimol CsHe(g) + 6 F2 (g) → 2 CF.(g) + 4 HF (g) AH =...