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.

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?