Calculate the entropy change for the reaction: Fe2O3(s) + 2Al(s) -> Al2O3(s) + 2Fe(s) Entropy data: Fe2O3(s): 90 J/K mol Al(s): 28.3 J/K mol Al2O3(s): 51 J/K mol Fe(s): 27.2 J/K mol

Is of of 3- ? a. 1--3- b. 1--2- c. 1--3- d. of

The combustion of methane, ch4, releases 890.4kj/mol. that is, when one mole of methane is burned,890.4 kj are given off to the surroundings. this meansthat the products have 890.4 kj less than the reactants.thus, ah for the reaction = - 890.4 kj. a negative symbolforah indicates an exothermic reaction.ch (g) + 20 (g)> co2 (g) + 2 h0 (1); ah = - 890.4 kga) how much energy is given off when 2.00 mol of ch,are burned? b) how much energy is released when 22.4g of ch. areburned?

If the solubility of a gas in water is 1.22 g/l at 2.75 atm, what is its solubility (in g/l) at 1.0 atm?