1 Clouds are formed when millions of drops of water become suspended in the air. Which of the following is a step in the process of cloud formation?
A Expansion of cold air
B Formation of carbon dioxide
C Condensation of water vapor
D Breakdown of atmospheric ozone

Which compound contain an iron with a 3+ charge

Name the intersection of plane bpq and plane cpq.

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided