What are the vertical columns of the Periodic Table are called? A) spectra
B) periods
C) groups
D) energy levels

Jewelweed, a flowering plant, has seed pods that burst open when touched and forcefully eject their seeds. these structures are favorable because they a. can cause genetic changes to occur. b. prevent germination within the seed pod. c. aid in the dispersal of the species. d. attract insects that aid in pollination.

A6.10 m nacl can be made by adding [x]g of nacl to a container and making the volume of water up to the 1.00 l line

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure