3. A new element, coolium (Oo) has been formulated by a crazy grade ten scientist. The only thing that is known about it so far is that it is a halogen. a. How many electrons does it have in its outer orbit?
b. What will be the name of the compound it forms with sodium?
c. What will be the name of the compound it forms with calcium?
d. Predict the formulas of the compounds named in (b) and (c)?

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

How many moles of lead are in 1.50 x 10^12 atoms of lead? could you explain the answer as well and not just give it to me i am refreshing for finals and i need to know how to do it

Which of the following molecules is polar? c3h7oh c2h5cooh