will copper or iron be able to replace zinc ions in solution? why?

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

How is the shape of the poem “peer” connected to its meaning?

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)