A piece of metal weighing so with a specific heat of 0.48.JgCat 1066.5 °C is dunked into a beaker containing 407.7 mb of water at 25 CYNING YAN is absorbed by the water, what will be the final temperature of the water expressed in INCO Cunter 4.18 N Pwater 197 Select one: O a. none of the following b. 42.3°C OC 44°C Od. 63°C Clear my choice

3. Given the following thermochemical equations. 2 H2(8) + Ozle) ---→ 2 H2O (1) N2Osle) + H20 (1) ----→ 2 HNO3 (1) % N2 (e) + 3/2 O2 (e) + ½ H2(g) ---→ HNO31) AH° = - 571.5 kJ AH° = -76.6 kJ AH° = -174.0 kJ Calculate the AH° for the reaction: 2 Nz(g) + 5 Ozle) → 2 N¿Os(8)

Calculate AG for the reaction 2 H₂S(g) + SO2(g) 3 Srhombic(s) + 2 H₂O(g) For the following conditions at 25°C: PH₂S=0.0004 atm Pso₂=0.0143 atm PH₂O=0.0162 atm AG = AGOf H₂S(g): SO2(g) = -300. kJ/mol H₂O(g) = -229 kJ/mol = -34 kJ/mol KJ Submit Answer 6 item attempts remaining Try Another Version Previous Next

Consider the reaction (demonstrated in class) which occurs when a balloon filled with H2(g) and O2(g) is ignited. What would be the signs of AH, AS and AG for this reaction when it is run at room temperature? 2 H2(g) + O2(g) → 2 H₂O(g) B. C. D. E. ABCDE ΔΗ AS AG +

A system absorbs 423 J of heat while doing 241 J of work. What is the value of AU ? Lütfen birini seçin: O a. +182 J O b. -182 J O C. +664 J O d. -664 J O e. -364 J

Which of the substances have a standard heat of formation (AH;) of zero? 0,(g) at 25.0 °C and 1 atm C,H,(g) at standard conditions Cl,(g) at 2 atm Fe at 1200 °C

The oxidation of hydrazine, N2H4 by hydrogen peroxide forms nitrogen gas and water vapour. The standard enthalpies of formation, delta H° (kJ /mol) at 25°C of hydrazine, hydrogen peroxide and water vapour are +50.63, -187.8 and -241.8 respectively. What is the temperature rise if the heat released from the oxidation of 2.00 g hydrazine by 10.0 g of hydrogen peroxide is used to warm up 1 dm^3 of water?

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Use the following thermochemical data to calculate AG°, for the formation of HI at 25°C. rxn H2(g) 2g) HI(g) AH°; (kJ/mol) 62.25 25.9 AS°F (J/mol) 260.57 206.3 131 kJ AG rxn mol

Which of the following does not have a standard enthalpy of formation equal to zero at 25°C and 1.0 atm? Select one: a. H20() b. F2(g) O c. H2(g) O d. Cu(s)