40cm^3 of oxygen are reacted with 40cm^3 of carbon monoxide. what are the volumes of the gases remaining, measured at the original temperature and pressure? (pls )

Schrodinger and heisenberg developed an alternate theory about atomic nature that contradicted some of bohr's model of the atom. how do changes resulting from new technology and evidence affect the reputation of the atomic theory?

Which position represents spring in the southern hemisphere? a) b) c) d)

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon