What question could be asked to help determine whether the solar system is heliocentric or geocentric?
A) Why does the moon seem larger than the sun when it is further away?
B) Why can objects be seen orbiting other planets ( i. e. Jupiter’a moon)?
C) Why do some planets seem to change direction/move backward at times?
D) How do the stars/visible planets seem to move across the sky?

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins. co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)