If 2.0 liters of oxygen gas react with excess carbon monoxide at stp, how many liters of carbon dioxide can be produced under the same conditions?
2co (g) + o2 (g) yields 2co2 (g)
a 1.0 l
b 2.0 l
c 4.0 l
s 6.0 l

Balanced equation
2CO (g) + O2 (g) yields 2CO2 (g)

Stoichiometry
1 moles of Oxygen produce 2 moles of Carbon dioxide

Number of moles is proportional to Volume [same temperature and same pressure]

Then 2 liters of Oxygen produce 4 liters of carbon dioxide.

Answer C: 4.0 L

1.from liquid state to gaseous state is evaporation 3.solid to liquid is melting 5. solid to gaseous state is sublimation 6. gas to solid state is decomposition 7. a change of state is known as the states of matters

It has to be b i hope this