Use hess’s law to calculate the standard heat of the water-gas shift reactions. co(g) + h2o àco2(g) + h2from each of the two sets of data given here: (a)co(g) + h2o(l) àco2(g)+ h2(g)∆퐻#r = 1226 btu/lb-moleh2o(l) àh2o(v)∆퐻#r = 18,935 btu/lb-mole(b)co(g) + ½ o2(g)àco2(g) ∆퐻#r = -121,740 btu/lb-moleh2(g)+ ½ o2(g)àh2o(v)∆퐻#r = -104,040 btu/lb-mole

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Tell me the iupac names of the following alcohols:

What does the symbol (–hfus) indicate in a phase change?