1) A new gemstone arrives at your lab, and you want to investigate it. Knowing its volume is 7.24 cm3 and its density is 3,148 kg/m3, what is the mass of this gem (in g)? Show an appropriate number of significant figures. Hint: 1 m3 = 1,000,000 cm3.

2) Propane is fed into a burner at a rate of 100 moles/minute. The amount of dry air that is added is just

enough to form carbon monoxide and water. The outlet gases from the burner are fed to a reactor

where the water-gas shift reaction occurs. An additional 400 moles/minute of water is added to the

reactor. Draw a diagram of the process. If the equilibrium constant is 2 for the water-gas shift reaction,

calculate the composition of the outlet stream from the reactor.

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