In the following equation, CO is  Fe2O3(s)   +  3CO(g)  →  2Fe(s)  +  3CO2(g)

Calculate ΔGrxn at 298 K under the conditions shown below for the following reaction. SO3 (g) + H2O (g) ↔ H2SO4 (l)                   ΔG O = -90.5 kJ P(SO3) = 0.20 atm; P(H2O) = 0.88 atm

Use the standard half-cell potentials listed below to calculate the standard cell potential for the following reaction occurring in an electrochemical cell at 25 OC. (The equation is balanced.)  Pb(s) + Br2 (l) à Pb2+ (aq) + 2 Br- (aq) Pb2+ (aq) + 2 e- à Pb (s)                  EO = -0.13 V Br2 (l) + 2 e- à2 Br- (aq)                  EO = +1.07 V

The equilibrium constant is given for one of the reactions below.  Determine the value of the missing equilibrium constant. N2O4 (g) ⇌ 2NO2 (g)                 Kc = 1.46                                                      6NO2 (g) ⇌ 3 N2O4 (g)       Kc  = ?

The highest temperature ever recorded in the US is 134 Fahrenheit. Express this temperature in Celsius.

Give the term for amount of solute in mole per mass of solvent in kg. 

Of the following. which acids are weak acids? I. HBr II. HF III. HNO3 IV. HNO2 V. H2CO3 VI. H3AsO4

Which noble gas configuration (short hand notation) is correct for 49In115 (Indium)?

Write the molecular formula for an alkane with 4 carbons.  What is this hydrocarbon called?

Consider the following hypothetical chemical reaction     A  +  2B  →  E The mechanism for this reaction is: (1) 2A  +  B  →  C (slow) (2) B  +  C  →  D (fast) (3)          D  →  E  (fast) Which of the following is the correct rate law for this reaction?