Totaal Vraag 1: [31]  

Calculate ΔGrxn at 308 K under the conditions shown below for the following reaction.Fe2O3(s) + 3 CO(g) → 2 Fe(s) + 3 CO2(g)ΔG° = -28.0 kJ P(CO) = 1.4 atm, P(CO2) = 2.1 atm

Determine ΔG°rxn for the following reaction at 298 K.FeO(s) + CO(g) → Fe(s) + CO2(g)ΔH°= -11.0 kJ; ΔS°= -17.4 J/K

Identify the compound with the standard free energy of formation equal to zero.

Calculate ΔS°rxn for the following reaction. The S∘ for each species is shown below the reaction. C2H2(g) + 2 H2(g) → C2H6(g)S°(J/mol∙K)200.9130.7229.2

What is this C-shaped structure outlined in PINK called?

VRAAG 1(vervolg)   1.3 Ben koop ʼn fiets vir R3 200 op bêrekoop (huurkoop). Hy betaal ʼn deposito van R750 en daarna R300 maandeliks om die balans te dek.    1.3.1 Druk die deposito as ʼn persentasie van die koopprys uit (2) 1.3.2 Bepaal die balans nadat die deposito betaal is.  (2) 1.3.3 Bepaal die totale bedrag betaal nadat die deposito en vyf paaiemente betaal is (2)

For a given reaction, ΔH = -27.7 kJ/mol and ΔS = -76.6 J/Kmol. The reaction will have at Assume that ΔH and ΔS do not vary with temperature.

What are these blue blood vessels that the GREEN arrows are pointing to called?

QUESTION  5 5.1 Liam and Amy are planning their wedding. Amy wants a four-layer red-velvet wedding cake.  She has yet to decide between a cylindrical or a rectangular cake Right click on the button below to open the LAYOUT OF THE FOUR-LAYER RED-VELVET WEDDING CAKE in a new tab.   5.1.1 Determine the total height of the cylindrical cake in millimeters. (3) 5.1.2 The lower (base) layer of the cylindrical cake has a radius of 14 cm. Determine the diameter of the lower layer in cm. (2) 5.1.3 Define the term perimeter. (2) 5.1.4 Calculate the area (in cm2) of the bottom of the pan necessary to bake the top layer of the rectangular cake.You can use the following formula: Area = length × width (3) 5.1.5 Aunt Abby is going to bake the wedding cake. She’s going to use a recipe in a recipe book, published in England.   NOTE: 1 kg = 2.25 pounds 1 ml flour = 0.7 g of flour     (a)  Aunt Abby needs 3 and half a pound of butter.  Determine the mass of butter in kilograms rounded to 2 decimals. (3)   (b) Aunt Abby has only a kitchen scale at her disposal.   If Aunt Abby needs 625 ml of flour, determine the mass of the flour in grams. (3)   (c)  The cake should be baked at 356 °F.   Determine at how many degrees Celsius the oven should be set.   You can use the following formula: °C = (°F – 32°) ÷ 1,8 (3)