"a quantity representing the amount of water vapor in the atmosphere or a gas."
Answer:
The seafloor
Explanation:
the bottom of the ocean, aka the sea floor.
usually made from sand
The compounds are missing. It will be helpful instead if you know what are stereoisomers. <span>Two molecules are described as stereoisomers of each other if they are made of the same </span>atoms<span>, connected in the same sequence, but the atoms are positioned differently in space in which the difference between two stereoisomers can only be seen when the three dimensional arrangement of the molecules is shown.</span>
The answer is refining which is c
The columns, called groups, contain elements with similar chemical behaviours. Six groups have accepted names as well as assigned numbers: for example, group 17 elements are the halogens; and group 18 are the noble gases.
Hope this helps :)