Elemental carbon usually exists in one of two forms: graphite or diamond. It is generally believed that diamonds last forever. The table shows the standard enthalpy of formation ( AHP) and the standard molar entropy (S) values for diamond and graphite. Part A AGion= What is the standard Gibbs free energy for the transformation of diamond to graphite at 298 K? Cdiamond graphite Express your answer to three significant figures and include the appropriate units. ▸ View Available Hint(s) Submit Substance Cgraphite Cdiamond Previous Answers ΔΗ} (kJ/mol) 0 1.897 Templates Symbols undo regio Teset keyboard shortcuts help V Value Units S (J/mol. K) 5.740 2.38

At 100 ° C, 1 mol of liquid water takes 19400 calories and under one atmosphere pressure, the same it turns into steam in conditions. In the change of water state; What are the values ​​of δW, δQ, ∆U and ∆H?

What is the change in Gibb's Free Energy for a reaction that has an enthalpy change of -17.9 kJ/mol and a entropy change of -138.3 J/(mol K) at 56.7 °C? Your Answer: Answer units

The heat of vaporization AH, of heptane (C-H₁6) is 31.2 kJ/mol. Calculate the change in entropy AS when 736. g of heptane condenses at 98.4 °C. Be sure your answer contains a unit symbol. Round your answer to 3 significant digits. x10 ロ・ロ X H ■

Ip acellus_engine.html?ClassID=D1653724337# Calculate the entropy of the phase change of uranium hexafluoride from gas to solid. UF6(g) → UF6(s) Substance S° (J/mol-K) UF (s) UF (g) ASiep = [ ? ] J/mol - K 228 380 Enter either a + or - sign AND the magnitude in your answer. Enter

For the following reaction (the detonation of nitroglycerin), is it spontaneous under standard conditions and how can you tell? 4 C4H5N3O9(l) (arrow >) 12 CO2(g) + 10 H2O(g) + 6 N2(g) + O2(g)    ΔH = -5678 kJ

Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy AS. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction observations conclusions ΔΗ is (pick one) A The reverse of this reaction is always spontaneous. As is (pick one) ΔΗ is (pick one) B This reaction is spontaneous only below 20. °C. As is (pick one) с This reaction is spontaneous except below 85. °C but proceeds at a slower rate below ΔΗ is (pick one) 129. °C. As is (pick one) ×

The heat of fusion AH, of acetic acid (HCH₂CO₂) is 11.7 kJ/mol. Calculate the change in entropy AS when 5.7 g of acetic acid melts at 17.0 °C. Be sure your answer contains a unit symbol. Round your answer to 2 significant digits.

.The heat of vaporization AH, of diethyl ether ((CH), (CH), 0) is 26.7 kJ/mol. Calculate the change in entropy AS when 877. g of diethyl ether boils at 34.6 °C. Be sure your answer contains a unit symbol and the correct number of significant digits. 0.0 μ X 号 5 D

Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy AS. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction observations conclusions AH is A This reaction is always spontaneous, but proceeds slower at temperatures below 45. °C. AS is ΔΗ is This reaction is spontaneous only above 150. °C but proceeds at a faster rate above 180. °C. AS is ΔΗ is This reaction is exothermic and proceeds slower at temperatures below 67. °C. AS is X C (pick one) (pick one) (pick one) (pick one) ✓ (pick one) (pick one) Ś ?