Interpreting data:
an unknown element has chemical behavior similar to that of silicon (si) and lead (pb). the unknown element has a mass greater than that of sulfur (s), but less than that of cadmium (cd). use the periodic table to determine the identity of the unknown element.

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?

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)