Calculate the standard gibbs free energy of each of the following reactions: 1.(g) = 2(g), k = 6.8 at 1200. k ag, cro (s) = 2 ag" (aq) + cro (aq). k = 1.1 x 10" at 298 k 56.20 calculate the standard gibbs free energy for each of the following reactions: (a) h; (g) + 1,(g) = 2 hi(g), k = 54 at 700. k (b) cci, cooh(aq) + h2o(l) = cci, co,- (aq) + h,0* (aq), k = 0.30 at 298 k 621 calculate the equilibrium constant at 25°c for each of the following reactions, by using data in appendix 2a: (a) the combustion of hydrogen: 2 h2(g) + 0,(g) + 2 h2o(g) (b) the oxidation of carbon monoxide: 2 co(g) + o,(g) = (c) the decomposition of limestone: caco3(s) cao(s) + co; (8) 56.22 calculate the equilibrium constant at 25°c for each of the following reactions, by using data in appendix 2a: (a) the synthesis of trichloromethane (chloroform) from natural gas (methane). age(ch, cl, g) = 48.5 k-mol ch.(g) + cl,(g) - ch, ci(g) + hcl(g) (b) the hydrogenation of acetylene to ethane: ch,(g) + 2 h3(g) - ch(g) @) the final step in the industrial production of nitric acid 3 no.(g) + h,0() -- 2 hno, (aq) + no(g) (d) the reaction of hydrazine and oxygen in a rocket: nh.(1) + o2(g) - n(g) + 2 h 0(1) 2co: (8)

Nconcentration refers to the molar concentration of an ion in solution. it may be identical to, or greater or less than, the molar concentration of the compound containing the ion that was used to make the solution. for soluble salts, the molarity of a particular ion is equal to the molarity of that compound times the subscript for that ion. for example, 1 m of alcl3 is 1 m in al3+ and 3 m in cl−. 1 m of (nh4)2so4 is 2 m in nh4+ and 1 m in so42−. part a what is the concentration of k+ in 0.15 m of k2s? view available hint(s) nothing m m part b if cacl2 is dissolved in water, what can be said about the concentration of the ca2+ ion? view available hint(s) if is dissolved in water, what can be said about the concentration of the ion? it has the same concentration as the cl− ion. its concentration is half that of the cl− ion. its concentration is twice that of the cl− ion. its concentration is one-third that of the cl− ion. part c a scientist wants to make a solution of tribasic sodium phosphate, na3po4, for a laboratory experiment. how many grams of na3po4 will be needed to produce 550 ml of a solution that has a concentration of na+ ions of 0.700 m ? express your answer numerically in grams. view available hint(s) mass of na3po4 n a 3 p o 4 = nothing g provide feedback

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.

In science class richard learns that a substance has a boiling point of 230 fahrenheit his teacher ask him to convert this temperature to degrees celsius what is the boiling point of his substance in degrees celsius