If a lake has a surface area of 13.5 km2 and an average depth of 17.4 m. What is the volume of the lake in Liters? ( Hint, a liter is the same as a dm3 . If you find the volume in km3 or m3 you can covert to dm3 to find liters)

(Hint #2 Don't forget that if the unit is cubed so is the conversion. if 1m = 10 dm then 1m3 = 103 dm3 )

Which element in the third period would you expect to have the larger atomic radius, sodium (na) or sulfur (s)? a. sodium, because it has a higher effective nuclear charge attracting electrons in fewer energy levels. b. sodium, because it has fewer protons attracting electrons in the same energy levels. c. sulfur, because it has more protons attracting electrons in more energy levels. d. sulfur, because it has a higher effective nuclear charge attracting electrons in the same energy levels.

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

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1: